1264541613 has 8 divisors (see below), whose sum is σ = 1691059968. Its totient is φ = 840525504.

The previous prime is 1264541543. The next prime is 1264541653. The reversal of 1264541613 is 3161454621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1264541613 - 2⁹ = 1264541101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264541653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624381 + ... + 626402.

It is an arithmetic number, because the mean of its divisors is an integer number (211382496).

Almost surely, 2^1264541613 is an apocalyptic number.

It is an amenable number.

1264541613 is a deficient number, since it is larger than the sum of its proper divisors (426518355).

1264541613 is a wasteful number, since it uses less digits than its factorization.

1264541613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251123.

The product of its digits is 17280, while the sum is 33.

The square root of 1264541613 is about 35560.3938813956. The cubic root of 1264541613 is about 1081.3784447943.

The spelling of 1264541613 in words is "one billion, two hundred sixty-four million, five hundred forty-one thousand, six hundred thirteen".