1166897939 has 16 divisors (see below), whose sum is σ = 1323079680. Its totient is φ = 1023295680.

The previous prime is 1166897933. The next prime is 1166897959. The reversal of 1166897939 is 9397986611.

It is a cyclic number.

It is not a de Polignac number, because 1166897939 - 2²⁸ = 898462483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166897933) 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, 29522 + ... + 56615.

It is an arithmetic number, because the mean of its divisors is an integer number (82692480).

Almost surely, 2^1166897939 is an apocalyptic number.

1166897939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1166897939 is a deficient number, since it is larger than the sum of its proper divisors (156181741).

1166897939 is a wasteful number, since it uses less digits than its factorization.

1166897939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86210.

The product of its digits is 4408992, while the sum is 59.

The square root of 1166897939 is about 34159.8878657410. The cubic root of 1166897939 is about 1052.7961568811.

The spelling of 1166897939 in words is "one billion, one hundred sixty-six million, eight hundred ninety-seven thousand, nine hundred thirty-nine".