18874486633 has 2 divisors, whose sum is σ = 18874486634. Its totient is φ = 18874486632.

The previous prime is 18874486577. The next prime is 18874486651. The reversal of 18874486633 is 33668447881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16228721664 + 2645764969 = 127392^2 + 51437^2 .

It is a cyclic number.

It is not a de Polignac number, because 18874486633 - 2³³ = 10284552041 is a prime.

It is not a weakly prime, because it can be changed into another prime (18874486663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437243316 + 9437243317.

It is an arithmetic number, because the mean of its divisors is an integer number (9437243317).

Almost surely, 2^18874486633 is an apocalyptic number.

It is an amenable number.

18874486633 is a deficient number, since it is larger than the sum of its proper divisors (1).

18874486633 is an equidigital number, since it uses as much as digits as its factorization.

18874486633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18579456, while the sum is 58.

The spelling of 18874486633 in words is "eighteen billion, eight hundred seventy-four million, four hundred eighty-six thousand, six hundred thirty-three".