18373051226 has 4 divisors (see below), whose sum is σ = 27559576842. Its totient is φ = 9186525612.

The previous prime is 18373051219. The next prime is 18373051247. The reversal of 18373051226 is 62215037381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16357131025 + 2015920201 = 127895^2 + 44899^2 .

It is a super-2 number, since 2×18373051226² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18373051226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4593262805 + ... + 4593262808.

Almost surely, 2^18373051226 is an apocalyptic number.

18373051226 is a deficient number, since it is larger than the sum of its proper divisors (9186525616).

18373051226 is an equidigital number, since it uses as much as digits as its factorization.

18373051226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186525615.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 18373051226 in words is "eighteen billion, three hundred seventy-three million, fifty-one thousand, two hundred twenty-six".