1264926739 has 2 divisors, whose sum is σ = 1264926740. Its totient is φ = 1264926738.

The previous prime is 1264926721. The next prime is 1264926757. The reversal of 1264926739 is 9376294621.

It is a balanced prime because it is at equal distance from previous prime (1264926721) and next prime (1264926757).

It is a cyclic number.

It is not a de Polignac number, because 1264926739 - 2¹³ = 1264918547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1264926692 and 1264926701.

It is not a weakly prime, because it can be changed into another prime (1264956739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632463369 + 632463370.

It is an arithmetic number, because the mean of its divisors is an integer number (632463370).

Almost surely, 2^1264926739 is an apocalyptic number.

1264926739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264926739 is an equidigital number, since it uses as much as digits as its factorization.

1264926739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The square root of 1264926739 is about 35565.8085666557. The cubic root of 1264926739 is about 1081.4882143947.

The spelling of 1264926739 in words is "one billion, two hundred sixty-four million, nine hundred twenty-six thousand, seven hundred thirty-nine".