1161864876 has 24 divisors (see below), whose sum is σ = 2743683264. Its totient is φ = 382621840.

The previous prime is 1161864833. The next prime is 1161864919. The reversal of 1161864876 is 6784681611.

It is an interprime number because it is at equal distance from previous prime (1161864833) and next prime (1161864919).

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, 582270 + ... + 584261.

It is an arithmetic number, because the mean of its divisors is an integer number (114320136).

Almost surely, 2^1161864876 is an apocalyptic number.

It is an amenable number.

1161864876 is an abundant number, since it is smaller than the sum of its proper divisors (1581818388).

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

1161864876 is a wasteful number, since it uses less digits than its factorization.

1161864876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166621 (or 1166619 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 1161864876 is about 34086.1390597410. The cubic root of 1161864876 is about 1051.2803356717.

The spelling of 1161864876 in words is "one billion, one hundred sixty-one million, eight hundred sixty-four thousand, eight hundred seventy-six".