869618540 has 48 divisors (see below), whose sum is σ = 2090297664. Its totient is φ = 297696000.

The previous prime is 869618539. The next prime is 869618551. The reversal of 869618540 is 45816968.

It is a super-2 number, since 2×869618540² = 1512472810223463200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 93710 + ... + 102570.

It is an arithmetic number, because the mean of its divisors is an integer number (43547868).

Almost surely, 2^869618540 is an apocalyptic number.

It is an amenable number.

869618540 is an abundant number, since it is smaller than the sum of its proper divisors (1220679124).

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

869618540 is a wasteful number, since it uses less digits than its factorization.

869618540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9578 (or 9576 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 869618540 is about 29489.2953459387. The cubic root of 869618540 is about 954.5007267546.

The spelling of 869618540 in words is "eight hundred sixty-nine million, six hundred eighteen thousand, five hundred forty".