18983955 has 8 divisors (see below), whose sum is σ = 30374352. Its totient is φ = 10124768.

The previous prime is 18983929. The next prime is 18983957. The reversal of 18983955 is 55938981.

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 18983955 - 2⁶ = 18983891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18983957) 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, 632784 + ... + 632813.

It is an arithmetic number, because the mean of its divisors is an integer number (3796794).

Almost surely, 2^18983955 is an apocalyptic number.

18983955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18983955 is a deficient number, since it is larger than the sum of its proper divisors (11390397).

18983955 is a wasteful number, since it uses less digits than its factorization.

18983955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265605.

The product of its digits is 388800, while the sum is 48.

The square root of 18983955 is about 4357.0580670907. The cubic root of 18983955 is about 266.7650305529.

The spelling of 18983955 in words is "eighteen million, nine hundred eighty-three thousand, nine hundred fifty-five".