3871645807162 has 48 divisors (see below), whose sum is σ = 6824427180480. Its totient is φ = 1642449336192.

The previous prime is 3871645807151. The next prime is 3871645807213. The reversal of 3871645807162 is 2617085461783.

It is a super-2 number, since 2×3871645807162² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3871645807097 and 3871645807106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4168923 + ... + 5012305.

It is an arithmetic number, because the mean of its divisors is an integer number (142175566260).

Almost surely, 2^{3871645807162} is an apocalyptic number.

3871645807162 is a deficient number, since it is larger than the sum of its proper divisors (2952781373318).

3871645807162 is a wasteful number, since it uses less digits than its factorization.

3871645807162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843875 (or 843868 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 3871645807162 in words is "three trillion, eight hundred seventy-one billion, six hundred forty-five million, eight hundred seven thousand, one hundred sixty-two".