18416778130 has 16 divisors (see below), whose sum is σ = 35100212760. Its totient is φ = 6933375232.

The previous prime is 18416778097. The next prime is 18416778131. The reversal of 18416778130 is 3187761481.

It can be written as a sum of positive squares in 4 ways, for example, as 17741973601 + 674804529 = 133199^2 + 25977^2 .

It is not an unprimeable number, because it can be changed into a prime (18416778131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54166825 + ... + 54167164.

Almost surely, 2^18416778130 is an apocalyptic number.

18416778130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18416778130 is a deficient number, since it is larger than the sum of its proper divisors (16683434630).

18416778130 is a wasteful number, since it uses less digits than its factorization.

18416778130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108334013.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 18416778130 in words is "eighteen billion, four hundred sixteen million, seven hundred seventy-eight thousand, one hundred thirty".