438536225940 has 48 divisors (see below), whose sum is σ = 1240560226752. Its totient is φ = 115737394176.

The previous prime is 438536225927. The next prime is 438536225971. The reversal of 438536225940 is 49522635834.

It is a congruent number.

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, 37669114 + ... + 37680753.

It is an arithmetic number, because the mean of its divisors is an integer number (25845004724).

Almost surely, 2^438536225940 is an apocalyptic number.

It is an amenable number.

438536225940 is an abundant number, since it is smaller than the sum of its proper divisors (802024000812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438536225940 is a wasteful number, since it uses less digits than its factorization.

438536225940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75349976 (or 75349974 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 438536225940 in words is "four hundred thirty-eight billion, five hundred thirty-six million, two hundred twenty-five thousand, nine hundred forty".