864513738 has 24 divisors (see below), whose sum is σ = 2043396576. Its totient is φ = 261973800.

The previous prime is 864513731. The next prime is 864513779. The reversal of 864513738 is 837315468.

864513738 is a `hidden beast` number, since 8 + 64 + 513 + 73 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 864513693 and 864513702.

It is not an unprimeable number, because it can be changed into a prime (864513731) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2182918 + ... + 2183313.

It is an arithmetic number, because the mean of its divisors is an integer number (85141524).

Almost surely, 2^864513738 is an apocalyptic number.

864513738 is an abundant number, since it is smaller than the sum of its proper divisors (1178882838).

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

864513738 is a wasteful number, since it uses less digits than its factorization.

864513738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366250 (or 4366247 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 864513738 is about 29402.6144755870. The cubic root of 864513738 is about 952.6293688337.

The spelling of 864513738 in words is "eight hundred sixty-four million, five hundred thirteen thousand, seven hundred thirty-eight".