3981653376 has 64 divisors (see below), whose sum is σ = 11132932800. Its totient is φ = 1257361920.

The previous prime is 3981653371. The next prime is 3981653407. The reversal of 3981653376 is 6733561893.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×3981653376² = 31707127213224394752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981653371) 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, 265570 + ... + 280161.

It is an arithmetic number, because the mean of its divisors is an integer number (173952075).

Almost surely, 2^3981653376 is an apocalyptic number.

It is an amenable number.

3981653376 is an abundant number, since it is smaller than the sum of its proper divisors (7151279424).

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

3981653376 is a wasteful number, since it uses less digits than its factorization.

3981653376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545767 (or 545755 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 51.

The square root of 3981653376 is about 63100.3437074633. The cubic root of 3981653376 is about 1584.9703777631.

The spelling of 3981653376 in words is "three billion, nine hundred eighty-one million, six hundred fifty-three thousand, three hundred seventy-six".