902451091 has 2 divisors, whose sum is σ = 902451092. Its totient is φ = 902451090.

The previous prime is 902451031. The next prime is 902451101. The reversal of 902451091 is 190154209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 902451091 - 2¹⁷ = 902320019 is a prime.

It is not a weakly prime, because it can be changed into another prime (902451031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451225545 + 451225546.

It is an arithmetic number, because the mean of its divisors is an integer number (451225546).

Almost surely, 2^902451091 is an apocalyptic number.

902451091 is a deficient number, since it is larger than the sum of its proper divisors (1).

902451091 is an equidigital number, since it uses as much as digits as its factorization.

902451091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 902451091 is about 30040.8237403704. The cubic root of 902451091 is about 966.3650724752.

The spelling of 902451091 in words is "nine hundred two million, four hundred fifty-one thousand, ninety-one".