1156243612 has 12 divisors (see below), whose sum is σ = 2026437616. Its totient is φ = 577261440.

The previous prime is 1156243609. The next prime is 1156243667. The reversal of 1156243612 is 2163426511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212064 + ... + 217447.

Almost surely, 2^1156243612 is an apocalyptic number.

It is an amenable number.

1156243612 is a deficient number, since it is larger than the sum of its proper divisors (870194004).

1156243612 is a wasteful number, since it uses less digits than its factorization.

1156243612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430188 (or 430186 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 1156243612 is about 34003.5823406888. The cubic root of 1156243612 is about 1049.5821805496.

The spelling of 1156243612 in words is "one billion, one hundred fifty-six million, two hundred forty-three thousand, six hundred twelve".