18976749 has 8 divisors (see below), whose sum is σ = 27602592. Its totient is φ = 11501040.

The previous prime is 18976739. The next prime is 18976751. The reversal of 18976749 is 94767981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18976749 - 2⁴ = 18976733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18976729) 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, 287494 + ... + 287559.

It is an arithmetic number, because the mean of its divisors is an integer number (3450324).

Almost surely, 2^18976749 is an apocalyptic number.

It is an amenable number.

18976749 is a deficient number, since it is larger than the sum of its proper divisors (8625843).

18976749 is a wasteful number, since it uses less digits than its factorization.

18976749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575067.

The product of its digits is 762048, while the sum is 51.

The square root of 18976749 is about 4356.2310544782. The cubic root of 18976749 is about 266.7312730616.

It can be divided in two parts, 1897 and 6749, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 18976749 in words is "eighteen million, nine hundred seventy-six thousand, seven hundred forty-nine".