18964030 has 32 divisors (see below), whose sum is σ = 35220096. Its totient is φ = 7348224.

The previous prime is 18964007. The next prime is 18964037. The reversal of 18964030 is 3046981.

It is a junction number, because it is equal to n+sod(n) for n = 18963983 and 18964001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18964037) 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 15 ways as a sum of consecutive naturals, for example, 73662 + ... + 73918.

It is an arithmetic number, because the mean of its divisors is an integer number (1100628).

Almost surely, 2^18964030 is an apocalyptic number.

18964030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18964030 is a deficient number, since it is larger than the sum of its proper divisors (16256066).

18964030 is a wasteful number, since it uses less digits than its factorization.

18964030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18964030 is about 4354.7709469041. The cubic root of 18964030 is about 266.6716683090.

The spelling of 18964030 in words is "eighteen million, nine hundred sixty-four thousand, thirty".