18123634153 has 8 divisors (see below), whose sum is σ = 18374772168. Its totient is φ = 17872573824.

The previous prime is 18123634147. The next prime is 18123634181. The reversal of 18123634153 is 35143632181.

It can be written as a sum of positive squares in 4 ways, for example, as 4512211929 + 13611422224 = 67173^2 + 116668^2 .

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 18123634153 - 2⁵ = 18123634121 is a prime.

It is a super-2 number, since 2×18123634153² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18126634153) 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, 575451 + ... + 606127.

It is an arithmetic number, because the mean of its divisors is an integer number (2296846521).

Almost surely, 2^18123634153 is an apocalyptic number.

It is an amenable number.

18123634153 is a deficient number, since it is larger than the sum of its proper divisors (251138015).

18123634153 is an equidigital number, since it uses as much as digits as its factorization.

18123634153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38843.

The product of its digits is 51840, while the sum is 37.

The spelling of 18123634153 in words is "eighteen billion, one hundred twenty-three million, six hundred thirty-four thousand, one hundred fifty-three".