1264331219 has 2 divisors, whose sum is σ = 1264331220. Its totient is φ = 1264331218.

The previous prime is 1264331147. The next prime is 1264331239. The reversal of 1264331219 is 9121334621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264331219 - 2²⁸ = 995895763 is a prime.

It is a super-2 number, since 2×1264331219² = 3197066862676051922, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1264331239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632165609 + 632165610.

It is an arithmetic number, because the mean of its divisors is an integer number (632165610).

Almost surely, 2^1264331219 is an apocalyptic number.

1264331219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264331219 is an equidigital number, since it uses as much as digits as its factorization.

1264331219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 1264331219 is about 35557.4354952660. The cubic root of 1264331219 is about 1081.3184683429.

The spelling of 1264331219 in words is "one billion, two hundred sixty-four million, three hundred thirty-one thousand, two hundred nineteen".