18912046 has 8 divisors (see below), whose sum is σ = 29283264. Its totient is φ = 9150960.

The previous prime is 18911999. The next prime is 18912053. The reversal of 18912046 is 64021981.

It is a happy number.

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

It is a super-2 number, since 2×18912046² = 715330967812232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 18911999 and 18912017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152455 + ... + 152578.

It is an arithmetic number, because the mean of its divisors is an integer number (3660408).

Almost surely, 2^18912046 is an apocalyptic number.

18912046 is a deficient number, since it is larger than the sum of its proper divisors (10371218).

18912046 is a wasteful number, since it uses less digits than its factorization.

18912046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305066.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18912046 is about 4348.7982247973. The cubic root of 18912046 is about 266.4277794651.

The spelling of 18912046 in words is "eighteen million, nine hundred twelve thousand, forty-six".