381837013 has 12 divisors (see below), whose sum is σ = 396373824. Its totient is φ = 367815000.

The previous prime is 381836971. The next prime is 381837037. The reversal of 381837013 is 310738183.

It is not a de Polignac number, because 381837013 - 2²¹ = 379739861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381837013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381837713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240420 + ... + 242002.

It is an arithmetic number, because the mean of its divisors is an integer number (33031152).

Almost surely, 2^381837013 is an apocalyptic number.

It is an amenable number.

381837013 is a deficient number, since it is larger than the sum of its proper divisors (14536811).

381837013 is a wasteful number, since it uses less digits than its factorization.

381837013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 1865 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 381837013 is about 19540.6502706537. The cubic root of 381837013 is about 725.4809416097.

The spelling of 381837013 in words is "three hundred eighty-one million, eight hundred thirty-seven thousand, thirteen".