1264654322 has 4 divisors (see below), whose sum is σ = 1896981486. Its totient is φ = 632327160.

The previous prime is 1264654319. The next prime is 1264654373. The reversal of 1264654322 is 2234564621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2234564621 = 619 ⋅3609959.

It can be written as a sum of positive squares in only one way, i.e., 955984561 + 308669761 = 30919^2 + 17569^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316163579 + ... + 316163582.

Almost surely, 2^1264654322 is an apocalyptic number.

1264654322 is a deficient number, since it is larger than the sum of its proper divisors (632327164).

1264654322 is an equidigital number, since it uses as much as digits as its factorization.

1264654322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632327163.

The product of its digits is 69120, while the sum is 35.

The square root of 1264654322 is about 35561.9786007472. The cubic root of 1264654322 is about 1081.4105717092.

The spelling of 1264654322 in words is "one billion, two hundred sixty-four million, six hundred fifty-four thousand, three hundred twenty-two".