1137970549 has 4 divisors (see below), whose sum is σ = 1138219564. Its totient is φ = 1137721536.

The previous prime is 1137970543. The next prime is 1137970567. The reversal of 1137970549 is 9450797311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9450797311 = 223 ⋅42380257.

It can be written as a sum of positive squares in 2 ways, for example, as 505800100 + 632170449 = 22490^2 + 25143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137970549 - 2²³ = 1129581941 is a prime.

It is a super-2 number, since 2×1137970549² = 2589953940782722802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1137970499 and 1137970508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137970543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117522 + ... + 126835.

It is an arithmetic number, because the mean of its divisors is an integer number (284554891).

Almost surely, 2^1137970549 is an apocalyptic number.

It is an amenable number.

1137970549 is a deficient number, since it is larger than the sum of its proper divisors (249015).

1137970549 is an equidigital number, since it uses as much as digits as its factorization.

1137970549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249014.

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 1137970549 is about 33733.8190692960. The cubic root of 1137970549 is about 1044.0236598744.

The spelling of 1137970549 in words is "one billion, one hundred thirty-seven million, nine hundred seventy thousand, five hundred forty-nine".