18662946 has 16 divisors (see below), whose sum is σ = 38194464. Its totient is φ = 6076224.

The previous prime is 18662933. The next prime is 18662947. The reversal of 18662946 is 64926681.

It is a junction number, because it is equal to n+sod(n) for n = 18662898 and 18662907.

It is not an unprimeable number, because it can be changed into a prime (18662947) 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, 35911 + ... + 36426.

It is an arithmetic number, because the mean of its divisors is an integer number (2387154).

Almost surely, 2^18662946 is an apocalyptic number.

18662946 is an abundant number, since it is smaller than the sum of its proper divisors (19531518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18662946 is a wasteful number, since it uses less digits than its factorization.

18662946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72385.

The product of its digits is 124416, while the sum is 42.

The square root of 18662946 is about 4320.0631939822. The cubic root of 18662946 is about 265.2528546583.

The spelling of 18662946 in words is "eighteen million, six hundred sixty-two thousand, nine hundred forty-six".