3898478692136 has 32 divisors (see below), whose sum is σ = 8845287791040. Its totient is φ = 1572495606528.

The previous prime is 3898478692063. The next prime is 3898478692139. The reversal of 3898478692136 is 6312968748983.

It is a super-2 number, since 2×3898478692136² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3898478692139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047519370 + ... + 2047521273.

It is an arithmetic number, because the mean of its divisors is an integer number (276415243470).

Almost surely, 2^{3898478692136} is an apocalyptic number.

It is an amenable number.

3898478692136 is an abundant number, since it is smaller than the sum of its proper divisors (4946809098904).

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

3898478692136 is a wasteful number, since it uses less digits than its factorization.

3898478692136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095040673 (or 4095040669 counting only the distinct ones).

The product of its digits is 752467968, while the sum is 74.

The spelling of 3898478692136 in words is "three trillion, eight hundred ninety-eight billion, four hundred seventy-eight million, six hundred ninety-two thousand, one hundred thirty-six".