3993571516 has 24 divisors (see below), whose sum is σ = 7638712704. Its totient is φ = 1811778480.

The previous prime is 3993571513. The next prime is 3993571523. The reversal of 3993571516 is 6151753993.

It is a super-2 number, since 2×3993571516² = 31897226906813076512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3993571516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993571513) 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, 63760 + ... + 109783.

It is an arithmetic number, because the mean of its divisors is an integer number (318279696).

Almost surely, 2^3993571516 is an apocalyptic number.

It is an amenable number.

3993571516 is a deficient number, since it is larger than the sum of its proper divisors (3645141188).

3993571516 is a wasteful number, since it uses less digits than its factorization.

3993571516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174081 (or 174079 counting only the distinct ones).

The product of its digits is 765450, while the sum is 49.

The square root of 3993571516 is about 63194.7111394617. The cubic root of 3993571516 is about 1586.5502141502.

The spelling of 3993571516 in words is "three billion, nine hundred ninety-three million, five hundred seventy-one thousand, five hundred sixteen".