18204010057 has 8 divisors (see below), whose sum is σ = 19283281416. Its totient is φ = 17125677312.

The previous prime is 18204010051. The next prime is 18204010063. The reversal of 18204010057 is 75001040281.

It is an interprime number because it is at equal distance from previous prime (18204010051) and next prime (18204010063).

It can be written as a sum of positive squares in 4 ways, for example, as 4280954041 + 13923056016 = 65429^2 + 117996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18204010057 - 2²³ = 18195621449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18204010051) 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, 194518 + ... + 272479.

It is an arithmetic number, because the mean of its divisors is an integer number (2410410177).

Almost surely, 2^18204010057 is an apocalyptic number.

18204010057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18204010057 is a deficient number, since it is larger than the sum of its proper divisors (1079271359).

18204010057 is a wasteful number, since it uses less digits than its factorization.

18204010057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469307.

The product of its (nonzero) digits is 2240, while the sum is 28.

The spelling of 18204010057 in words is "eighteen billion, two hundred four million, ten thousand, fifty-seven".