18979702 has 8 divisors (see below), whose sum is σ = 32536656. Its totient is φ = 8134152.

The previous prime is 18979691. The next prime is 18979703. The reversal of 18979702 is 20797981.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18979703) 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 3 ways as a sum of consecutive naturals, for example, 677833 + ... + 677860.

It is an arithmetic number, because the mean of its divisors is an integer number (4067082).

Almost surely, 2^18979702 is an apocalyptic number.

18979702 is a deficient number, since it is larger than the sum of its proper divisors (13556954).

18979702 is a wasteful number, since it uses less digits than its factorization.

18979702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355702.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 18979702 is about 4356.5699810746. The cubic root of 18979702 is about 266.7451078267.

The spelling of 18979702 in words is "eighteen million, nine hundred seventy-nine thousand, seven hundred two".