1166915940 has 48 divisors (see below), whose sum is σ = 3343357248. Its totient is φ = 303940224.

The previous prime is 1166915927. The next prime is 1166915947. The reversal of 1166915940 is 495196611.

It is a super-2 number, since 2×1166915940² = 2723385622052167200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1166915892 and 1166915901.

It is not an unprimeable number, because it can be changed into a prime (1166915947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223567 + ... + 228726.

It is an arithmetic number, because the mean of its divisors is an integer number (69653276).

Almost surely, 2^1166915940 is an apocalyptic number.

1166915940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166915940 is an abundant number, since it is smaller than the sum of its proper divisors (2176441308).

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

1166915940 is a wasteful number, since it uses less digits than its factorization.

1166915940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452348 (or 452346 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1166915940 is about 34160.1513462689. The cubic root of 1166915940 is about 1052.8015704612.

The spelling of 1166915940 in words is "one billion, one hundred sixty-six million, nine hundred fifteen thousand, nine hundred forty".