18103497 has 4 divisors (see below), whose sum is σ = 24138000. Its totient is φ = 12068996.

The previous prime is 18103493. The next prime is 18103517. The reversal of 18103497 is 79430181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18103497 - 2² = 18103493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18103493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3017247 + ... + 3017252.

It is an arithmetic number, because the mean of its divisors is an integer number (6034500).

Almost surely, 2^18103497 is an apocalyptic number.

It is an amenable number.

18103497 is a deficient number, since it is larger than the sum of its proper divisors (6034503).

18103497 is an equidigital number, since it uses as much as digits as its factorization.

18103497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034502.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 18103497 is about 4254.8204427449. The cubic root of 18103497 is about 262.5754739893.

The spelling of 18103497 in words is "eighteen million, one hundred three thousand, four hundred ninety-seven".