18103627690 has 32 divisors (see below), whose sum is σ = 35408125440. Its totient is φ = 6639019200.

The previous prime is 18103627657. The next prime is 18103627699. The reversal of 18103627690 is 9672630181.

It is a super-2 number, since 2×18103627690² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18103627699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530921 + ... + 1542700.

It is an arithmetic number, because the mean of its divisors is an integer number (1106503920).

Almost surely, 2^18103627690 is an apocalyptic number.

18103627690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18103627690 is a deficient number, since it is larger than the sum of its proper divisors (17304497750).

18103627690 is a wasteful number, since it uses less digits than its factorization.

18103627690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073678.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 18103627690 in words is "eighteen billion, one hundred three million, six hundred twenty-seven thousand, six hundred ninety".