18016237453 has 2 divisors, whose sum is σ = 18016237454. Its totient is φ = 18016237452.

The previous prime is 18016237427. The next prime is 18016237487. The reversal of 18016237453 is 35473261081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17653639689 + 362597764 = 132867^2 + 19042^2 .

It is a cyclic number.

It is not a de Polignac number, because 18016237453 - 2⁹ = 18016236941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18016237403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9008118726 + 9008118727.

It is an arithmetic number, because the mean of its divisors is an integer number (9008118727).

Almost surely, 2^18016237453 is an apocalyptic number.

It is an amenable number.

18016237453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18016237453 is an equidigital number, since it uses as much as digits as its factorization.

18016237453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 18016237453 in words is "eighteen billion, sixteen million, two hundred thirty-seven thousand, four hundred fifty-three".