1264940351 has 2 divisors, whose sum is σ = 1264940352. Its totient is φ = 1264940350.

The previous prime is 1264940321. The next prime is 1264940377. The reversal of 1264940351 is 1530494621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264940351 - 2¹⁰ = 1264939327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264940321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632470175 + 632470176.

It is an arithmetic number, because the mean of its divisors is an integer number (632470176).

Almost surely, 2^1264940351 is an apocalyptic number.

1264940351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264940351 is an equidigital number, since it uses as much as digits as its factorization.

1264940351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1264940351 is about 35565.9999297081. Note that the first 4 decimals coincide. The cubic root of 1264940351 is about 1081.4920937142.

It can be divided in two parts, 126 and 4940351, that multiplied together give a palindrome (622484226).

The spelling of 1264940351 in words is "one billion, two hundred sixty-four million, nine hundred forty thousand, three hundred fifty-one".