938861513 has 4 divisors (see below), whose sum is σ = 954774480. Its totient is φ = 922948548.

The previous prime is 938861477. The next prime is 938861537. The reversal of 938861513 is 315168839.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 938861513 - 2¹⁴ = 938845129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938861543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7956395 + ... + 7956512.

It is an arithmetic number, because the mean of its divisors is an integer number (238693620).

Almost surely, 2^938861513 is an apocalyptic number.

It is an amenable number.

938861513 is a deficient number, since it is larger than the sum of its proper divisors (15912967).

938861513 is a wasteful number, since it uses less digits than its factorization.

938861513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15912966.

The product of its digits is 155520, while the sum is 44.

The square root of 938861513 is about 30640.8471325451. The cubic root of 938861513 is about 979.1904716237.

The spelling of 938861513 in words is "nine hundred thirty-eight million, eight hundred sixty-one thousand, five hundred thirteen".