1864900806 has 16 divisors (see below), whose sum is σ = 3926107200. Its totient is φ = 588916008.

The previous prime is 1864900783. The next prime is 1864900819. The reversal of 1864900806 is 6080094681.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8179276 + ... + 8179503.

It is an arithmetic number, because the mean of its divisors is an integer number (245381700).

Almost surely, 2^1864900806 is an apocalyptic number.

1864900806 is an abundant number, since it is smaller than the sum of its proper divisors (2061206394).

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

1864900806 is a wasteful number, since it uses less digits than its factorization.

1864900806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16358803.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1864900806 is about 43184.4972877999. The cubic root of 1864900806 is about 1230.8881165990. Note that the first 3 decimals are identical.

The spelling of 1864900806 in words is "one billion, eight hundred sixty-four million, nine hundred thousand, eight hundred six".