10172564938 has 8 divisors (see below), whose sum is σ = 15260044932. Its totient is φ = 5085883296.

The previous prime is 10172564893. The next prime is 10172564939. The reversal of 10172564938 is 83946527101.

It can be written as a sum of positive squares in 2 ways, for example, as 10001400049 + 171164889 = 100007^2 + 13083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (10172564939) 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, 166645 + ... + 219352.

It is a 2-persistent number, because it is pandigital, and so is 2⋅10172564938 = 20345129876, but 3⋅10172564938 = 30517694814 is not.

Almost surely, 2^10172564938 is an apocalyptic number.

10172564938 is a deficient number, since it is larger than the sum of its proper divisors (5087479994).

10172564938 is a wasteful number, since it uses less digits than its factorization.

10172564938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399176.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 10172564938 in words is "ten billion, one hundred seventy-two million, five hundred sixty-four thousand, nine hundred thirty-eight".