1161823216 has 20 divisors (see below), whose sum is σ = 2252826792. Its totient is φ = 580448576.

The previous prime is 1161823207. The next prime is 1161823249. The reversal of 1161823216 is 6123281611.

It is a congruent number.

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, 7771 + ... + 48826.

Almost surely, 2^1161823216 is an apocalyptic number.

1161823216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1161823216 is a deficient number, since it is larger than the sum of its proper divisors (1091003576).

1161823216 is a wasteful number, since it uses less digits than its factorization.

1161823216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57888 (or 57882 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 1161823216 is about 34085.5279554241. The cubic root of 1161823216 is about 1051.2677705667.

The spelling of 1161823216 in words is "one billion, one hundred sixty-one million, eight hundred twenty-three thousand, two hundred sixteen".