18357945 has 8 divisors (see below), whose sum is σ = 29372736. Its totient is φ = 9790896.

The previous prime is 18357931. The next prime is 18357959. The reversal of 18357945 is 54975381.

It is an interprime number because it is at equal distance from previous prime (18357931) and next prime (18357959).

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

It is not a de Polignac number, because 18357945 - 2¹² = 18353849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18357897 and 18357906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611917 + ... + 611946.

It is an arithmetic number, because the mean of its divisors is an integer number (3671592).

Almost surely, 2^18357945 is an apocalyptic number.

18357945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18357945 is a deficient number, since it is larger than the sum of its proper divisors (11014791).

18357945 is a wasteful number, since it uses less digits than its factorization.

18357945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223871.

The product of its digits is 151200, while the sum is 42.

The square root of 18357945 is about 4284.6172524509. The cubic root of 18357945 is about 263.7999373860.

The spelling of 18357945 in words is "eighteen million, three hundred fifty-seven thousand, nine hundred forty-five".