1144553916 has 24 divisors (see below), whose sum is σ = 2913410304. Its totient is φ = 346834480.

The previous prime is 1144553887. The next prime is 1144553923. The reversal of 1144553916 is 6193554411.

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, 4335300 + ... + 4335563.

It is an arithmetic number, because the mean of its divisors is an integer number (121392096).

Almost surely, 2^1144553916 is an apocalyptic number.

It is an amenable number.

1144553916 is an abundant number, since it is smaller than the sum of its proper divisors (1768856388).

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

1144553916 is a wasteful number, since it uses less digits than its factorization.

1144553916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670881 (or 8670879 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 1144553916 is about 33831.2564945495. The cubic root of 1144553916 is about 1046.0330789320.

The spelling of 1144553916 in words is "one billion, one hundred forty-four million, five hundred fifty-three thousand, nine hundred sixteen".