1144956855 has 16 divisors (see below), whose sum is σ = 2093635584. Its totient is φ = 523408800.

The previous prime is 1144956847. The next prime is 1144956887. The reversal of 1144956855 is 5586594411.

It is not a de Polignac number, because 1144956855 - 2³ = 1144956847 is a prime.

It is a super-2 number, since 2×1144956855² = 2621852399622982050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5452071 + ... + 5452280.

It is an arithmetic number, because the mean of its divisors is an integer number (130852224).

Almost surely, 2^1144956855 is an apocalyptic number.

1144956855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1144956855 is a deficient number, since it is larger than the sum of its proper divisors (948678729).

1144956855 is a wasteful number, since it uses less digits than its factorization.

1144956855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10904366.

The product of its digits is 864000, while the sum is 48.

The square root of 1144956855 is about 33837.2110996164. The cubic root of 1144956855 is about 1046.1558161443.

The spelling of 1144956855 in words is "one billion, one hundred forty-four million, nine hundred fifty-six thousand, eight hundred fifty-five".