869152538 has 8 divisors (see below), whose sum is σ = 1304049780. Its totient is φ = 434469280.

The previous prime is 869152517. The next prime is 869152561. The reversal of 869152538 is 835251968.

It can be written as a sum of positive squares in 2 ways, for example, as 512433769 + 356718769 = 22637^2 + 18887^2 .

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

It is a super-2 number, since 2×869152538² = 1510852268623682888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 869152492 and 869152501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42923 + ... + 59838.

Almost surely, 2^869152538 is an apocalyptic number.

869152538 is a deficient number, since it is larger than the sum of its proper divisors (434897242).

869152538 is a wasteful number, since it uses less digits than its factorization.

869152538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106992.

The product of its digits is 518400, while the sum is 47.

The square root of 869152538 is about 29481.3930810605. The cubic root of 869152538 is about 954.3302003677.

The spelling of 869152538 in words is "eight hundred sixty-nine million, one hundred fifty-two thousand, five hundred thirty-eight".