1864945500 has 96 divisors (see below), whose sum is σ = 5924475648. Its totient is φ = 452104000.

The previous prime is 1864945499. The next prime is 1864945529. The reversal of 1864945500 is 55494681.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40014 + ... + 73013.

It is an arithmetic number, because the mean of its divisors is an integer number (61713288).

Almost surely, 2^1864945500 is an apocalyptic number.

1864945500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864945500 is an abundant number, since it is smaller than the sum of its proper divisors (4059530148).

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

1864945500 is a wasteful number, since it uses less digits than its factorization.

1864945500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113060 (or 113048 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1864945500 is about 43185.0147620676. The cubic root of 1864945500 is about 1230.8979496285.

The spelling of 1864945500 in words is "one billion, eight hundred sixty-four million, nine hundred forty-five thousand, five hundred".