1264349797 has 2 divisors, whose sum is σ = 1264349798. Its totient is φ = 1264349796.

The previous prime is 1264349747. The next prime is 1264349809. The reversal of 1264349797 is 7979434621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1253584836 + 10764961 = 35406^2 + 3281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264349797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264349747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632174898 + 632174899.

It is an arithmetic number, because the mean of its divisors is an integer number (632174899).

Almost surely, 2^1264349797 is an apocalyptic number.

It is an amenable number.

1264349797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264349797 is an equidigital number, since it uses as much as digits as its factorization.

1264349797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 52.

The square root of 1264349797 is about 35557.6967336187. The cubic root of 1264349797 is about 1081.3237645912.

The spelling of 1264349797 in words is "one billion, two hundred sixty-four million, three hundred forty-nine thousand, seven hundred ninety-seven".