1327136749 has 8 divisors (see below), whose sum is σ = 1371541752. Its totient is φ = 1283304960.

The previous prime is 1327136743. The next prime is 1327136813. The reversal of 1327136749 is 9476317231.

It can be written as a sum of positive squares in 4 ways, for example, as 81540900 + 1245595849 = 9030^2 + 35293^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1327136749 - 2⁷ = 1327136621 is a prime.

It is a super-2 number, since 2×1327136749² = 3522583901092578002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327136743) 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, 138594 + ... + 147859.

It is an arithmetic number, because the mean of its divisors is an integer number (171442719).

Almost surely, 2^1327136749 is an apocalyptic number.

It is an amenable number.

1327136749 is a deficient number, since it is larger than the sum of its proper divisors (44405003).

1327136749 is a wasteful number, since it uses less digits than its factorization.

1327136749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286607.

The product of its digits is 190512, while the sum is 43.

The square root of 1327136749 is about 36429.8881277448. Note that the first 3 decimals coincide. The cubic root of 1327136749 is about 1098.9347121882.

The spelling of 1327136749 in words is "one billion, three hundred twenty-seven million, one hundred thirty-six thousand, seven hundred forty-nine".