18879045 has 16 divisors (see below), whose sum is σ = 30412800. Its totient is φ = 10000064.

The previous prime is 18879037. The next prime is 18879053. The reversal of 18879045 is 54097881.

It is an interprime number because it is at equal distance from previous prime (18879037) and next prime (18879053).

It is a cyclic number.

It is not a de Polignac number, because 18879045 - 2³ = 18879037 is a prime.

It is a super-2 number, since 2×18879045² = 712836680224050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18878988 and 18879006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1989 + ... + 6458.

It is an arithmetic number, because the mean of its divisors is an integer number (1900800).

Almost surely, 2^18879045 is an apocalyptic number.

18879045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18879045 is a deficient number, since it is larger than the sum of its proper divisors (11533755).

18879045 is a wasteful number, since it uses less digits than its factorization.

18879045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8604.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 18879045 is about 4345.0023014954. The cubic root of 18879045 is about 266.2727195230.

The spelling of 18879045 in words is "eighteen million, eight hundred seventy-nine thousand, forty-five".