18738995 has 8 divisors (see below), whose sum is σ = 24531120. Its totient is φ = 13628320.

The previous prime is 18738991. The next prime is 18739003. The reversal of 18738995 is 59983781.

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

It is not a de Polignac number, because 18738995 - 2² = 18738991 is a prime.

It is a super-2 number, since 2×18738995² = 702299867220050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18738991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170300 + ... + 170409.

It is an arithmetic number, because the mean of its divisors is an integer number (3066390).

Almost surely, 2^18738995 is an apocalyptic number.

18738995 is a deficient number, since it is larger than the sum of its proper divisors (5792125).

18738995 is a wasteful number, since it uses less digits than its factorization.

18738995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340725.

The product of its digits is 544320, while the sum is 50.

The square root of 18738995 is about 4328.8560844639. The cubic root of 18738995 is about 265.6126563122.

The spelling of 18738995 in words is "eighteen million, seven hundred thirty-eight thousand, nine hundred ninety-five".