18422948 has 6 divisors (see below), whose sum is σ = 32240166. Its totient is φ = 9211472.

The previous prime is 18422941. The next prime is 18422953. The reversal of 18422948 is 84922481.

It can be written as a sum of positive squares in only one way, i.e., 17572864 + 850084 = 4192^2 + 922^2 .

It is not an unprimeable number, because it can be changed into a prime (18422941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2302865 + ... + 2302872.

It is an arithmetic number, because the mean of its divisors is an integer number (5373361).

Almost surely, 2^18422948 is an apocalyptic number.

It is an amenable number.

18422948 is a deficient number, since it is larger than the sum of its proper divisors (13817218).

18422948 is a wasteful number, since it uses less digits than its factorization.

18422948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4605741 (or 4605739 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 18422948 is about 4292.1961744543. The cubic root of 18422948 is about 264.1109305776.

It can be divided in two parts, 184 and 22948, that added together give a palindrome (23132).

The spelling of 18422948 in words is "eighteen million, four hundred twenty-two thousand, nine hundred forty-eight".