7993985901 has 16 divisors (see below), whose sum is σ = 11941877568. Its totient is φ = 4713897600.

The previous prime is 7993985899. The next prime is 7993985911. The reversal of 7993985901 is 1095893997.

It is not a de Polignac number, because 7993985901 - 2¹ = 7993985899 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993985911) 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, 3272320 + ... + 3274761.

It is an arithmetic number, because the mean of its divisors is an integer number (746367348).

Almost surely, 2^7993985901 is an apocalyptic number.

It is an amenable number.

7993985901 is a deficient number, since it is larger than the sum of its proper divisors (3947891667).

7993985901 is a wasteful number, since it uses less digits than its factorization.

7993985901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6547132.

The product of its (nonzero) digits is 5511240, while the sum is 60.

The square root of 7993985901 is about 89409.0929436151. The cubic root of 7993985901 is about 1999.4986994427.

The spelling of 7993985901 in words is "seven billion, nine hundred ninety-three million, nine hundred eighty-five thousand, nine hundred one".