1264126311 has 16 divisors (see below), whose sum is σ = 2140320000. Its totient is φ = 722357784.

The previous prime is 1264126243. The next prime is 1264126333. The reversal of 1264126311 is 1136214621.

It is a happy number.

1264126311 is a `hidden beast` number, since 1 + 2 + 641 + 2 + 6 + 3 + 11 = 666.

It is not a de Polignac number, because 1264126311 - 2¹¹ = 1264124263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264126351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3344061 + ... + 3344438.

It is an arithmetic number, because the mean of its divisors is an integer number (133770000).

Almost surely, 2^1264126311 is an apocalyptic number.

1264126311 is a deficient number, since it is larger than the sum of its proper divisors (876193689).

1264126311 is an equidigital number, since it uses as much as digits as its factorization.

1264126311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688515 (or 6688509 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1264126311 is about 35554.5540121093. The cubic root of 1264126311 is about 1081.2600493748.

The spelling of 1264126311 in words is "one billion, two hundred sixty-four million, one hundred twenty-six thousand, three hundred eleven".