4644578892 has 48 divisors (see below), whose sum is σ = 11311205472. Its totient is φ = 1481925120.

The previous prime is 4644578881. The next prime is 4644578923. The reversal of 4644578892 is 2988754464.

It is a super-2 number, since 2×4644578892² = 43144226168023895328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62983 + ... + 115134.

It is an arithmetic number, because the mean of its divisors is an integer number (235650114).

Almost surely, 2^4644578892 is an apocalyptic number.

It is an amenable number.

4644578892 is an abundant number, since it is smaller than the sum of its proper divisors (6666626580).

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

4644578892 is a wasteful number, since it uses less digits than its factorization.

4644578892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178218 (or 178216 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The square root of 4644578892 is about 68151.1474004657. The cubic root of 4644578892 is about 1668.4586507364.

The spelling of 4644578892 in words is "four billion, six hundred forty-four million, five hundred seventy-eight thousand, eight hundred ninety-two".