1864873000 has 32 divisors (see below), whose sum is σ = 4363805160. Its totient is φ = 745948800.

The previous prime is 1864872991. The next prime is 1864873027. The reversal of 1864873000 is 3784681.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 568440964 + 1296432036 = 23842^2 + 36006^2 .

It is a super-2 number, since 2×1864873000² = 6955502612258000000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931437 + ... + 933436.

Almost surely, 2^1864873000 is an apocalyptic number.

1864873000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864873000 is an abundant number, since it is smaller than the sum of its proper divisors (2498932160).

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

1864873000 is a wasteful number, since it uses less digits than its factorization.

1864873000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864894 (or 1864880 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1864873000 is about 43184.1753423635. The cubic root of 1864873000 is about 1230.8819989823.

The spelling of 1864873000 in words is "one billion, eight hundred sixty-four million, eight hundred seventy-three thousand".