18814510090 has 32 divisors (see below), whose sum is σ = 35888423760. Its totient is φ = 7089062400.

The previous prime is 18814510073. The next prime is 18814510093. The reversal of 18814510090 is 9001541881.

It can be written as a sum of positive squares in 8 ways, for example, as 8273175849 + 10541334241 = 90957^2 + 102671^2 .

It is not an unprimeable number, because it can be changed into a prime (18814510093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779301 + ... + 803080.

Almost surely, 2^18814510090 is an apocalyptic number.

18814510090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18814510090 is a deficient number, since it is larger than the sum of its proper divisors (17073913670).

18814510090 is a wasteful number, since it uses less digits than its factorization.

18814510090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582458.

The product of its (nonzero) digits is 11520, while the sum is 37.

The spelling of 18814510090 in words is "eighteen billion, eight hundred fourteen million, five hundred ten thousand, ninety".