18752989 has 8 divisors (see below), whose sum is σ = 19925568. Its totient is φ = 17588160.

The previous prime is 18752959. The next prime is 18753001. The reversal of 18752989 is 98925781.

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

It is a cyclic number.

It is not a de Polignac number, because 18752989 - 2⁵ = 18752957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18752939) 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, 3514 + ... + 7060.

It is an arithmetic number, because the mean of its divisors is an integer number (2490696).

Almost surely, 2^18752989 is an apocalyptic number.

It is an amenable number.

18752989 is a deficient number, since it is larger than the sum of its proper divisors (1172579).

18752989 is a wasteful number, since it uses less digits than its factorization.

18752989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875.

The product of its digits is 362880, while the sum is 49.

The square root of 18752989 is about 4330.4721451592. The cubic root of 18752989 is about 265.6787583743.

The spelling of 18752989 in words is "eighteen million, seven hundred fifty-two thousand, nine hundred eighty-nine".