18254400553 has 2 divisors, whose sum is σ = 18254400554. Its totient is φ = 18254400552.

The previous prime is 18254400533. The next prime is 18254400557. The reversal of 18254400553 is 35500445281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18108546624 + 145853929 = 134568^2 + 12077^2 .

It is a cyclic number.

It is not a de Polignac number, because 18254400553 - 2³³ = 9664465961 is a prime.

It is not a weakly prime, because it can be changed into another prime (18254400557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9127200276 + 9127200277.

It is an arithmetic number, because the mean of its divisors is an integer number (9127200277).

Almost surely, 2^18254400553 is an apocalyptic number.

It is an amenable number.

18254400553 is a deficient number, since it is larger than the sum of its proper divisors (1).

18254400553 is an equidigital number, since it uses as much as digits as its factorization.

18254400553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 18254400553 in words is "eighteen billion, two hundred fifty-four million, four hundred thousand, five hundred fifty-three".