18970500 has 48 divisors (see below), whose sum is σ = 55246464. Its totient is φ = 5058400.

The previous prime is 18970489. The next prime is 18970513. The reversal of 18970500 is 507981.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4824 + ... + 7823.

It is an arithmetic number, because the mean of its divisors is an integer number (1150968).

Almost surely, 2^18970500 is an apocalyptic number.

18970500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18970500 is an abundant number, since it is smaller than the sum of its proper divisors (36275964).

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

18970500 is a wasteful number, since it uses less digits than its factorization.

18970500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12669 (or 12657 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 18970500 is about 4355.5137469649. The cubic root of 18970500 is about 266.7019918481.

The spelling of 18970500 in words is "eighteen million, nine hundred seventy thousand, five hundred".