1155123876 has 12 divisors (see below), whose sum is σ = 2695289072. Its totient is φ = 385041288.

The previous prime is 1155123869. The next prime is 1155123899. The reversal of 1155123876 is 6783215511.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1155123876² = 2668622337810526752, which contains 22 as substring.

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, 48130150 + ... + 48130173.

Almost surely, 2^1155123876 is an apocalyptic number.

It is an amenable number.

1155123876 is an abundant number, since it is smaller than the sum of its proper divisors (1540165196).

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

1155123876 is a wasteful number, since it uses less digits than its factorization.

1155123876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96260330 (or 96260328 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 1155123876 is about 33987.1133813980. The cubic root of 1155123876 is about 1049.2432570082.

The spelling of 1155123876 in words is "one billion, one hundred fifty-five million, one hundred twenty-three thousand, eight hundred seventy-six".