18964450 has 12 divisors (see below), whose sum is σ = 35273970. Its totient is φ = 7585760.

The previous prime is 18964423. The next prime is 18964457. The reversal of 18964450 is 5446981.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8602489 + 10361961 = 2933^2 + 3219^2 .

It is not an unprimeable number, because it can be changed into a prime (18964457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189595 + ... + 189694.

Almost surely, 2^18964450 is an apocalyptic number.

18964450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18964450 is a deficient number, since it is larger than the sum of its proper divisors (16309520).

18964450 is a wasteful number, since it uses less digits than its factorization.

18964450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379301 (or 379296 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 18964450 is about 4354.8191696097. The cubic root of 18964450 is about 266.6736369706.

The spelling of 18964450 in words is "eighteen million, nine hundred sixty-four thousand, four hundred fifty".