18874949833 has 4 divisors (see below), whose sum is σ = 18875235280. Its totient is φ = 18874664388.

The previous prime is 18874949759. The next prime is 18874949851. The reversal of 18874949833 is 33894947881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18874949833 - 2⁹ = 18874949321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18874949033) 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, 13366 + ... + 194752.

It is an arithmetic number, because the mean of its divisors is an integer number (4718808820).

Almost surely, 2^18874949833 is an apocalyptic number.

It is an amenable number.

18874949833 is a deficient number, since it is larger than the sum of its proper divisors (285447).

18874949833 is a wasteful number, since it uses less digits than its factorization.

18874949833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285446.

The product of its digits is 41803776, while the sum is 64.

The spelling of 18874949833 in words is "eighteen billion, eight hundred seventy-four million, nine hundred forty-nine thousand, eight hundred thirty-three".