1490518451 has 2 divisors, whose sum is σ = 1490518452. Its totient is φ = 1490518450.

The previous prime is 1490518439. The next prime is 1490518457. The reversal of 1490518451 is 1548150941.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1490518451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1490518457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745259225 + 745259226.

It is an arithmetic number, because the mean of its divisors is an integer number (745259226).

Almost surely, 2^1490518451 is an apocalyptic number.

1490518451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490518451 is an equidigital number, since it uses as much as digits as its factorization.

1490518451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 1490518451 is about 38607.2331435445. The cubic root of 1490518451 is about 1142.2972173048.

The spelling of 1490518451 in words is "one billion, four hundred ninety million, five hundred eighteen thousand, four hundred fifty-one".