1264237057 has 2 divisors, whose sum is σ = 1264237058. Its totient is φ = 1264237056.

The previous prime is 1264237033. The next prime is 1264237061. The reversal of 1264237057 is 7507324621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1264229136 + 7921 = 35556^2 + 89^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264237057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264237027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632118528 + 632118529.

It is an arithmetic number, because the mean of its divisors is an integer number (632118529).

Almost surely, 2^1264237057 is an apocalyptic number.

It is an amenable number.

1264237057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264237057 is an equidigital number, since it uses as much as digits as its factorization.

1264237057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 1264237057 is about 35556.1113874957. Note that the first 3 decimals coincide. The cubic root of 1264237057 is about 1081.2916236797.

The spelling of 1264237057 in words is "one billion, two hundred sixty-four million, two hundred thirty-seven thousand, fifty-seven".