3873149739081 has 24 divisors (see below), whose sum is σ = 6769875176064. Its totient is φ = 2083038514560.

The previous prime is 3873149739071. The next prime is 3873149739097. The reversal of 3873149739081 is 1809379413783.

3873149739081 is a `hidden beast` number, since 3 + 8 + 7 + 31 + 497 + 39 + 0 + 81 = 666.

It is not a de Polignac number, because 3873149739081 - 2⁹ = 3873149738569 is a prime.

It is a super-2 number, since 2×3873149739081² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3873149739071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1808192085 + ... + 1808194226.

It is an arithmetic number, because the mean of its divisors is an integer number (282078132336).

Almost surely, 2^{3873149739081} is an apocalyptic number.

It is an amenable number.

3873149739081 is a deficient number, since it is larger than the sum of its proper divisors (2896725436983).

3873149739081 is a wasteful number, since it uses less digits than its factorization.

3873149739081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616386341 (or 3616386338 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 3873149739081 in words is "three trillion, eight hundred seventy-three billion, one hundred forty-nine million, seven hundred thirty-nine thousand, eighty-one".