18368955 has 48 divisors (see below), whose sum is σ = 35582976. Its totient is φ = 8688960.

The previous prime is 18368947. The next prime is 18368981. The reversal of 18368955 is 55986381.

It is not a de Polignac number, because 18368955 - 2³ = 18368947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18368955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20854 + ... + 21716.

It is an arithmetic number, because the mean of its divisors is an integer number (741312).

Almost surely, 2^18368955 is an apocalyptic number.

18368955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18368955 is a deficient number, since it is larger than the sum of its proper divisors (17214021).

18368955 is a wasteful number, since it uses less digits than its factorization.

18368955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 925 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 18368955 is about 4285.9018887511. The cubic root of 18368955 is about 263.8526640005.

It can be divided in two parts, 18 and 368955, that multiplied together give a triangular number (6641190 = T₃₆₄₄).

The spelling of 18368955 in words is "eighteen million, three hundred sixty-eight thousand, nine hundred fifty-five".