3890656368 has 80 divisors (see below), whose sum is σ = 11215844640. Its totient is φ = 1291286016.

The previous prime is 3890656351. The next prime is 3890656387. The reversal of 3890656368 is 8636560983.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81330 + ... + 119982.

It is an arithmetic number, because the mean of its divisors is an integer number (140198058).

Almost surely, 2^3890656368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3890656368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5607922320).

3890656368 is an abundant number, since it is smaller than the sum of its proper divisors (7325188272).

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

3890656368 is a wasteful number, since it uses less digits than its factorization.

3890656368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38903 (or 38891 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The square root of 3890656368 is about 62375.1261962651. The cubic root of 3890656368 is about 1572.8028647519.

The spelling of 3890656368 in words is "three billion, eight hundred ninety million, six hundred fifty-six thousand, three hundred sixty-eight".