1264612451 has 2 divisors, whose sum is σ = 1264612452. Its totient is φ = 1264612450.

The previous prime is 1264612421. The next prime is 1264612477. The reversal of 1264612451 is 1542164621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264612451 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1264612421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632306225 + 632306226.

It is an arithmetic number, because the mean of its divisors is an integer number (632306226).

Almost surely, 2^1264612451 is an apocalyptic number.

1264612451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264612451 is an equidigital number, since it uses as much as digits as its factorization.

1264612451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 1264612451 is about 35561.3898912852. The cubic root of 1264612451 is about 1081.3986368953.

The spelling of 1264612451 in words is "one billion, two hundred sixty-four million, six hundred twelve thousand, four hundred fifty-one".