18950613 has 8 divisors (see below), whose sum is σ = 27564576. Its totient is φ = 11485200.

The previous prime is 18950609. The next prime is 18950621. The reversal of 18950613 is 31605981.

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

It is not a de Polignac number, because 18950613 - 2² = 18950609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 574261 = 18950613 / (1 + 8 + 9 + 5 + 0 + 6 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18950653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287098 + ... + 287163.

It is an arithmetic number, because the mean of its divisors is an integer number (3445572).

Almost surely, 2^18950613 is an apocalyptic number.

It is an amenable number.

18950613 is a deficient number, since it is larger than the sum of its proper divisors (8613963).

18950613 is a wasteful number, since it uses less digits than its factorization.

18950613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574275.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 18950613 is about 4353.2301799928. The cubic root of 18950613 is about 266.6087636433.

The spelling of 18950613 in words is "eighteen million, nine hundred fifty thousand, six hundred thirteen".