18741983 has 8 divisors (see below), whose sum is σ = 20381088. Its totient is φ = 17131104.

The previous prime is 18741979. The next prime is 18742021. The reversal of 18741983 is 38914781.

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 18741983 - 2² = 18741979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18741983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18741953) 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, 5660 + ... + 8337.

It is an arithmetic number, because the mean of its divisors is an integer number (2547636).

Almost surely, 2^18741983 is an apocalyptic number.

18741983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18741983 is a deficient number, since it is larger than the sum of its proper divisors (1639105).

18741983 is a wasteful number, since it uses less digits than its factorization.

18741983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14113.

The product of its digits is 48384, while the sum is 41.

The square root of 18741983 is about 4329.2011965258. The cubic root of 18741983 is about 265.6267731923.

The spelling of 18741983 in words is "eighteen million, seven hundred forty-one thousand, nine hundred eighty-three".