18029494177 has 12 divisors (see below), whose sum is σ = 19157371020. Its totient is φ = 16964566016.

The previous prime is 18029494169. The next prime is 18029494187. The reversal of 18029494177 is 77149492081.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1047234321 + 16982259856 = 32361^2 + 130316^2 .

It is not a de Polignac number, because 18029494177 - 2³ = 18029494169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18029494187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1893693 + ... + 1903189.

It is an arithmetic number, because the mean of its divisors is an integer number (1596447585).

Almost surely, 2^18029494177 is an apocalyptic number.

18029494177 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18029494177 is a deficient number, since it is larger than the sum of its proper divisors (1127876843).

18029494177 is an equidigital number, since it uses as much as digits as its factorization.

18029494177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16100 (or 16083 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 18029494177 in words is "eighteen billion, twenty-nine million, four hundred ninety-four thousand, one hundred seventy-seven".