1144555512 has 32 divisors (see below), whose sum is σ = 2862784080. Its totient is φ = 381332480.

The previous prime is 1144555507. The next prime is 1144555523. The reversal of 1144555512 is 2155554411.

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 7 ways as a sum of consecutive naturals, for example, 44062 + ... + 65042.

Almost surely, 2^1144555512 is an apocalyptic number.

1144555512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1144555512 is an abundant number, since it is smaller than the sum of its proper divisors (1718228568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144555512 is a wasteful number, since it uses less digits than its factorization.

1144555512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23263 (or 23259 counting only the distinct ones).

The product of its digits is 20000, while the sum is 33.

The square root of 1144555512 is about 33831.2800821961. The cubic root of 1144555512 is about 1046.0335651383.

The spelling of 1144555512 in words is "one billion, one hundred forty-four million, five hundred fifty-five thousand, five hundred twelve".