1166497990 has 32 divisors (see below), whose sum is σ = 2400943680. Its totient is φ = 399727104.

The previous prime is 1166497973. The next prime is 1166498017. The reversal of 1166497990 is 997946611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181146 + ... + 187474.

It is an arithmetic number, because the mean of its divisors is an integer number (75029490).

Almost surely, 2^1166497990 is an apocalyptic number.

1166497990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166497990 is an abundant number, since it is smaller than the sum of its proper divisors (1234445690).

1166497990 is a wasteful number, since it uses less digits than its factorization.

1166497990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 1166497990 is about 34154.0332903744. The cubic root of 1166497990 is about 1052.6758627602.

The spelling of 1166497990 in words is "one billion, one hundred sixty-six million, four hundred ninety-seven thousand, nine hundred ninety".