3890037637640 has 64 divisors (see below), whose sum is σ = 10912313381760. Its totient is φ = 1212479262720.

The previous prime is 3890037637637. The next prime is 3890037637649. The reversal of 3890037637640 is 467367300983.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (3890037637649) 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, 631496537 + ... + 631502696.

It is an arithmetic number, because the mean of its divisors is an integer number (170504896590).

Almost surely, 2^{3890037637640} is an apocalyptic number.

It is an amenable number.

3890037637640 is an abundant number, since it is smaller than the sum of its proper divisors (7022275744120).

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

3890037637640 is a wasteful number, since it uses less digits than its factorization.

3890037637640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262999262 (or 1262999258 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 56.

The spelling of 3890037637640 in words is "three trillion, eight hundred ninety billion, thirty-seven million, six hundred thirty-seven thousand, six hundred forty".