1264745115 has 12 divisors (see below), whose sum is σ = 2192224944. Its totient is φ = 674530704.

The previous prime is 1264745113. The next prime is 1264745117. The reversal of 1264745115 is 5115474621.

1264745115 is a `hidden beast` number, since 1 + 2 + 647 + 4 + 5 + 1 + 1 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1264745113) and next prime (1264745117).

It is not a de Polignac number, because 1264745115 - 2¹ = 1264745113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1264745115.

It is not an unprimeable number, because it can be changed into a prime (1264745113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14052679 + ... + 14052768.

It is an arithmetic number, because the mean of its divisors is an integer number (182685412).

Almost surely, 2^1264745115 is an apocalyptic number.

1264745115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1264745115 is a deficient number, since it is larger than the sum of its proper divisors (927479829).

1264745115 is a wasteful number, since it uses less digits than its factorization.

1264745115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28105458 (or 28105455 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 1264745115 is about 35563.2551237932. The cubic root of 1264745115 is about 1081.4364502329.

The spelling of 1264745115 in words is "one billion, two hundred sixty-four million, seven hundred forty-five thousand, one hundred fifteen".