375449731638 has 16 divisors (see below), whose sum is σ = 752214530496. Its totient is φ = 124930732680.

The previous prime is 375449731637. The next prime is 375449731663. The reversal of 375449731638 is 836137944573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (375449731633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54790756 + ... + 54797607.

It is an arithmetic number, because the mean of its divisors is an integer number (47013408156).

Almost surely, 2^375449731638 is an apocalyptic number.

375449731638 is an abundant number, since it is smaller than the sum of its proper divisors (376764798858).

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

375449731638 is a wasteful number, since it uses less digits than its factorization.

375449731638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109588939.

The product of its digits is 45722880, while the sum is 60.

The spelling of 375449731638 in words is "three hundred seventy-five billion, four hundred forty-nine million, seven hundred thirty-one thousand, six hundred thirty-eight".