1797166986 has 16 divisors (see below), whose sum is σ = 3603723264. Its totient is φ = 597490784.

The previous prime is 1797166961. The next prime is 1797167011. The reversal of 1797166986 is 6896617971.

It is an interprime number because it is at equal distance from previous prime (1797166961) and next prime (1797167011).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388731 + ... + 393326.

It is an arithmetic number, because the mean of its divisors is an integer number (225232704).

Almost surely, 2^1797166986 is an apocalyptic number.

1797166986 is an abundant number, since it is smaller than the sum of its proper divisors (1806556278).

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

1797166986 is a wasteful number, since it uses less digits than its factorization.

1797166986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782445.

The product of its digits is 6858432, while the sum is 60.

The square root of 1797166986 is about 42393.0063335923. The cubic root of 1797166986 is about 1215.8018801800.

The spelling of 1797166986 in words is "one billion, seven hundred ninety-seven million, one hundred sixty-six thousand, nine hundred eighty-six".