1518225451 has 2 divisors, whose sum is σ = 1518225452. Its totient is φ = 1518225450.

The previous prime is 1518225407. The next prime is 1518225463. The reversal of 1518225451 is 1545228151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1518225451 - 2⁷ = 1518225323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1518225481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 759112725 + 759112726.

It is an arithmetic number, because the mean of its divisors is an integer number (759112726).

Almost surely, 2^1518225451 is an apocalyptic number.

1518225451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1518225451 is an equidigital number, since it uses as much as digits as its factorization.

1518225451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16000, while the sum is 34.

The square root of 1518225451 is about 38964.4126222891. The cubic root of 1518225451 is about 1149.3317985878.

The spelling of 1518225451 in words is "one billion, five hundred eighteen million, two hundred twenty-five thousand, four hundred fifty-one".