1864500172 has 48 divisors (see below), whose sum is σ = 3490905600. Its totient is φ = 868795200.

The previous prime is 1864500151. The next prime is 1864500173. The reversal of 1864500172 is 2710054681.

It is not an unprimeable number, because it can be changed into a prime (1864500173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2659422 + ... + 2660122.

It is an arithmetic number, because the mean of its divisors is an integer number (72727200).

Almost surely, 2^1864500172 is an apocalyptic number.

It is an amenable number.

1864500172 is a deficient number, since it is larger than the sum of its proper divisors (1626405428).

1864500172 is a wasteful number, since it uses less digits than its factorization.

1864500172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1864500172 is about 43179.8584064376. The cubic root of 1864500172 is about 1230.7999669692.

The spelling of 1864500172 in words is "one billion, eight hundred sixty-four million, five hundred thousand, one hundred seventy-two".