1800864862923 has 64 divisors (see below), whose sum is σ = 2966309240832. Its totient is φ = 949203066240.

The previous prime is 1800864862903. The next prime is 1800864862943. The reversal of 1800864862923 is 3292684680081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1800864862903) and next prime (1800864862943).

It is not a de Polignac number, because 1800864862923 - 2⁵ = 1800864862891 is a prime.

It is a super-2 number, since 2×1800864862923² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1800864862903) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4024861 + ... + 4449857.

It is an arithmetic number, because the mean of its divisors is an integer number (46348581888).

Almost surely, 2^{1800864862923} is an apocalyptic number.

1800864862923 is a deficient number, since it is larger than the sum of its proper divisors (1165444377909).

1800864862923 is a wasteful number, since it uses less digits than its factorization.

1800864862923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425344.

The product of its (nonzero) digits is 7962624, while the sum is 57.

The spelling of 1800864862923 in words is "one trillion, eight hundred billion, eight hundred sixty-four million, eight hundred sixty-two thousand, nine hundred twenty-three".