438372920915 has 16 divisors (see below), whose sum is σ = 543113322240. Its totient is φ = 339325148160.

The previous prime is 438372920879. The next prime is 438372920933. The reversal of 438372920915 is 519029273834.

It is not a de Polignac number, because 438372920915 - 2¹² = 438372916819 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633227 + ... + 1130363.

It is an arithmetic number, because the mean of its divisors is an integer number (33944582640).

Almost surely, 2^438372920915 is an apocalyptic number.

438372920915 is a deficient number, since it is larger than the sum of its proper divisors (104740401325).

438372920915 is a wasteful number, since it uses less digits than its factorization.

438372920915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502862.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 438372920915 in words is "four hundred thirty-eight billion, three hundred seventy-two million, nine hundred twenty thousand, nine hundred fifteen".