18301460491 has 2 divisors, whose sum is σ = 18301460492. Its totient is φ = 18301460490.

The previous prime is 18301460477. The next prime is 18301460557. The reversal of 18301460491 is 19406410381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18301460491 - 2⁷ = 18301460363 is a prime.

It is a super-2 number, since 2×18301460491² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18301460491.

It is not a weakly prime, because it can be changed into another prime (18301460431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9150730245 + 9150730246.

It is an arithmetic number, because the mean of its divisors is an integer number (9150730246).

Almost surely, 2^18301460491 is an apocalyptic number.

18301460491 is a deficient number, since it is larger than the sum of its proper divisors (1).

18301460491 is an equidigital number, since it uses as much as digits as its factorization.

18301460491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 18301460491 in words is "eighteen billion, three hundred one million, four hundred sixty thousand, four hundred ninety-one".