1290545453 has 2 divisors, whose sum is σ = 1290545454. Its totient is φ = 1290545452.

The previous prime is 1290545441. The next prime is 1290545461. The reversal of 1290545453 is 3545450921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1239251209 + 51294244 = 35203^2 + 7162^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290545453 - 2¹⁶ = 1290479917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290545413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645272726 + 645272727.

It is an arithmetic number, because the mean of its divisors is an integer number (645272727).

Almost surely, 2^1290545453 is an apocalyptic number.

It is an amenable number.

1290545453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290545453 is an equidigital number, since it uses as much as digits as its factorization.

1290545453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 1290545453 is about 35924.1625232934. The cubic root of 1290545453 is about 1088.7406415933.

The spelling of 1290545453 in words is "one billion, two hundred ninety million, five hundred forty-five thousand, four hundred fifty-three".