3721395993 has 64 divisors (see below), whose sum is σ = 6141696000. Its totient is φ = 1997835840.

The previous prime is 3721395983. The next prime is 3721396013. The reversal of 3721395993 is 3995931273.

It is not a de Polignac number, because 3721395993 - 2⁸ = 3721395737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3721395943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2560455 + ... + 2561907.

It is an arithmetic number, because the mean of its divisors is an integer number (95964000).

Almost surely, 2^3721395993 is an apocalyptic number.

It is an amenable number.

3721395993 is a deficient number, since it is larger than the sum of its proper divisors (2420300007).

3721395993 is a wasteful number, since it uses less digits than its factorization.

3721395993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1613 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 51.

The square root of 3721395993 is about 61003.2457579103. The cubic root of 3721395993 is about 1549.6559754006.

The spelling of 3721395993 in words is "three billion, seven hundred twenty-one million, three hundred ninety-five thousand, nine hundred ninety-three".