373654351079881 has 3 divisors (see below), whose sum is σ = 373654370410023. Its totient is φ = 373654331749740.

The previous prime is 373654351079861. The next prime is 373654351079987. The reversal of 373654351079881 is 188970153456373.

The square root of 373654351079881 is 19330141.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 57876475460281 + 315777875619600 = 7607659^2 + 17770140^2 .

It is not a de Polignac number, because 373654351079881 - 2⁹ = 373654351079369 is a prime.

It is a super-2 number, since 2×373654351079881² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 373654351079881.

It is not an unprimeable number, because it can be changed into a prime (373654351079851) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9665071 + ... + 28995211.

It is an arithmetic number, because the mean of its divisors is an integer number (124551456803341).

Almost surely, 2^{373654351079881} is an apocalyptic number.

373654351079881 is the 19330141-st square number.

373654351079881 is the 9665071-st centered octagonal number.

It is an amenable number.

373654351079881 is a deficient number, since it is larger than the sum of its proper divisors (19330142).

373654351079881 is an frugal number, since it uses more digits than its factorization.

373654351079881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38660282 (or 19330141 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 70.

The spelling of 373654351079881 in words is "three hundred seventy-three trillion, six hundred fifty-four billion, three hundred fifty-one million, seventy-nine thousand, eight hundred eighty-one".