3865934520690 has 64 divisors (see below), whose sum is σ = 10293274091520. Its totient is φ = 921311560640.

The previous prime is 3865934520659. The next prime is 3865934520691. The reversal of 3865934520690 is 960254395683.

It is a happy number.

It is a super-3 number, since 3×3865934520690³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (3865934520691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99259794 + ... + 99298733.

It is an arithmetic number, because the mean of its divisors is an integer number (160832407680).

Almost surely, 2^{3865934520690} is an apocalyptic number.

3865934520690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3865934520690 is an abundant number, since it is smaller than the sum of its proper divisors (6427339570830).

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

3865934520690 is a wasteful number, since it uses less digits than its factorization.

3865934520690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198558607.

The product of its (nonzero) digits is 41990400, while the sum is 60.

The spelling of 3865934520690 in words is "three trillion, eight hundred sixty-five billion, nine hundred thirty-four million, five hundred twenty thousand, six hundred ninety".