18949315738799 has 8 divisors (see below), whose sum is σ = 19224859721760. Its totient is φ = 18674012095200.

The previous prime is 18949315738699. The next prime is 18949315738831. The reversal of 18949315738799 is 99783751394981.

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 18949315738799 - 2³⁶ = 18880596262063 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 (18949315738699) 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, 59926004 + ... + 60241385.

It is an arithmetic number, because the mean of its divisors is an integer number (2403107465220).

Almost surely, 2^{18949315738799} is an apocalyptic number.

18949315738799 is a deficient number, since it is larger than the sum of its proper divisors (275543982961).

18949315738799 is a wasteful number, since it uses less digits than its factorization.

18949315738799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120169681.

The product of its digits is 3703553280, while the sum is 83.

The spelling of 18949315738799 in words is "eighteen trillion, nine hundred forty-nine billion, three hundred fifteen million, seven hundred thirty-eight thousand, seven hundred ninety-nine".