18400654079 has 2 divisors, whose sum is σ = 18400654080. Its totient is φ = 18400654078.

The previous prime is 18400654067. The next prime is 18400654091. The reversal of 18400654079 is 97045600481.

It is a balanced prime because it is at equal distance from previous prime (18400654067) and next prime (18400654091).

It is a cyclic number.

It is not a de Polignac number, because 18400654079 - 2²⁸ = 18132218623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18400654099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9200327039 + 9200327040.

It is an arithmetic number, because the mean of its divisors is an integer number (9200327040).

Almost surely, 2^18400654079 is an apocalyptic number.

18400654079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18400654079 is an equidigital number, since it uses as much as digits as its factorization.

18400654079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 18400654079 in words is "eighteen billion, four hundred million, six hundred fifty-four thousand, seventy-nine".