181401318909354 has 32 divisors (see below), whose sum is σ = 376319275009920. Its totient is φ = 58225513453632.

The previous prime is 181401318909353. The next prime is 181401318909361. The reversal of 181401318909354 is 453909813104181.

It is a junction number, because it is equal to n+sod(n) for n = 181401318909294 and 181401318909303.

It is not an unprimeable number, because it can be changed into a prime (181401318909353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397436862 + ... + 1397566665.

It is an arithmetic number, because the mean of its divisors is an integer number (11759977344060).

Almost surely, 2^{181401318909354} is an apocalyptic number.

181401318909354 is an abundant number, since it is smaller than the sum of its proper divisors (194917956100566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181401318909354 is a wasteful number, since it uses less digits than its factorization.

181401318909354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795003934.

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 181401318909354 in words is "one hundred eighty-one trillion, four hundred one billion, three hundred eighteen million, nine hundred nine thousand, three hundred fifty-four".