18957045 has 8 divisors (see below), whose sum is σ = 30331296. Its totient is φ = 10110416.

The previous prime is 18957017. The next prime is 18957053. The reversal of 18957045 is 54075981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18957045 - 2⁵ = 18957013 is a prime.

It is a super-3 number, since 3×18957045³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18956994 and 18957012.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 631887 + ... + 631916.

It is an arithmetic number, because the mean of its divisors is an integer number (3791412).

Almost surely, 2^18957045 is an apocalyptic number.

18957045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18957045 is a deficient number, since it is larger than the sum of its proper divisors (11374251).

18957045 is a wasteful number, since it uses less digits than its factorization.

18957045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263811.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 18957045 is about 4353.9688790803. The cubic root of 18957045 is about 266.6389233290.

The spelling of 18957045 in words is "eighteen million, nine hundred fifty-seven thousand, forty-five".