1274397652 has 18 divisors (see below), whose sum is σ = 2451373274. Its totient is φ = 579271440.

The previous prime is 1274397643. The next prime is 1274397653. The reversal of 1274397652 is 2567934721.

It can be written as a sum of positive squares in only one way, i.e., 1267075216 + 7322436 = 35596^2 + 2706^2 .

It is a super-2 number, since 2×1274397652² = 3248178750846226208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274397653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1316043 + ... + 1317010.

Almost surely, 2^1274397652 is an apocalyptic number.

It is an amenable number.

1274397652 is a deficient number, since it is larger than the sum of its proper divisors (1176975622).

1274397652 is a wasteful number, since it uses less digits than its factorization.

1274397652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633079 (or 2633066 counting only the distinct ones).

The product of its digits is 635040, while the sum is 46.

The square root of 1274397652 is about 35698.7065872141. The cubic root of 1274397652 is about 1084.1806557475.

The spelling of 1274397652 in words is "one billion, two hundred seventy-four million, three hundred ninety-seven thousand, six hundred fifty-two".