1264145015 has 32 divisors (see below), whose sum is σ = 1765585536. Its totient is φ = 851005440.

The previous prime is 1264145011. The next prime is 1264145017. The reversal of 1264145015 is 5105414621.

It is not a de Polignac number, because 1264145015 - 2² = 1264145011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264145011) 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 31 ways as a sum of consecutive naturals, for example, 614729 + ... + 616781.

It is an arithmetic number, because the mean of its divisors is an integer number (55174548).

Almost surely, 2^1264145015 is an apocalyptic number.

1264145015 is a deficient number, since it is larger than the sum of its proper divisors (501440521).

1264145015 is a wasteful number, since it uses less digits than its factorization.

1264145015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1264145015 is about 35554.8170435456. The cubic root of 1264145015 is about 1081.2653821194.

Adding to 1264145015 its reverse (5105414621), we get a palindrome (6369559636).

The spelling of 1264145015 in words is "one billion, two hundred sixty-four million, one hundred forty-five thousand, fifteen".