18964465090 has 16 divisors (see below), whose sum is σ = 36144039672. Its totient is φ = 7139563264.

The previous prime is 18964465019. The next prime is 18964465097. The reversal of 18964465090 is 9056446981.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18955507041 + 8958049 = 137679^2 + 2993^2 .

It is a super-2 number, since 2×18964465090² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18964465097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55777669 + ... + 55778008.

Almost surely, 2^18964465090 is an apocalyptic number.

18964465090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18964465090 is a deficient number, since it is larger than the sum of its proper divisors (17179574582).

18964465090 is a wasteful number, since it uses less digits than its factorization.

18964465090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111555701.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 18964465090 in words is "eighteen billion, nine hundred sixty-four million, four hundred sixty-five thousand, ninety".