1490469451 has 2 divisors, whose sum is σ = 1490469452. Its totient is φ = 1490469450.

The previous prime is 1490469427. The next prime is 1490469457. The reversal of 1490469451 is 1549640941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1490469451 - 2²¹ = 1488372299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1490469398 and 1490469407.

It is not a weakly prime, because it can be changed into another prime (1490469457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745234725 + 745234726.

It is an arithmetic number, because the mean of its divisors is an integer number (745234726).

Almost surely, 2^1490469451 is an apocalyptic number.

1490469451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490469451 is an equidigital number, since it uses as much as digits as its factorization.

1490469451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1490469451 is about 38606.5985422181. The cubic root of 1490469451 is about 1142.2846996968.

The spelling of 1490469451 in words is "one billion, four hundred ninety million, four hundred sixty-nine thousand, four hundred fifty-one".