391630038789 has 16 divisors (see below), whose sum is σ = 571913201664. Its totient is φ = 236405910000.

The previous prime is 391630038743. The next prime is 391630038809. The reversal of 391630038789 is 987830036193.

391630038789 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 391630038789 - 2⁷ = 391630038661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391630038739) 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, 23632309 + ... + 23648874.

It is an arithmetic number, because the mean of its divisors is an integer number (35744575104).

Almost surely, 2^391630038789 is an apocalyptic number.

It is an amenable number.

391630038789 is a deficient number, since it is larger than the sum of its proper divisors (180283162875).

391630038789 is a wasteful number, since it uses less digits than its factorization.

391630038789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47281448.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 391630038789 in words is "three hundred ninety-one billion, six hundred thirty million, thirty-eight thousand, seven hundred eighty-nine".