1166601500 has 24 divisors (see below), whose sum is σ = 2547858768. Its totient is φ = 466640400.

The previous prime is 1166601493. The next prime is 1166601503. The reversal of 1166601500 is 51066611.

It is a self number, because there is not a number n which added to its sum of digits gives 1166601500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166601503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166102 + ... + 1167101.

It is an arithmetic number, because the mean of its divisors is an integer number (106160782).

Almost surely, 2^1166601500 is an apocalyptic number.

1166601500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166601500 is an abundant number, since it is smaller than the sum of its proper divisors (1381257268).

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

1166601500 is a wasteful number, since it uses less digits than its factorization.

1166601500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333222 (or 2333210 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1166601500 is about 34155.5485975559. The cubic root of 1166601500 is about 1052.7069984777.

The spelling of 1166601500 in words is "one billion, one hundred sixty-six million, six hundred one thousand, five hundred".