1397941166 has 16 divisors (see below), whose sum is σ = 2149187040. Its totient is φ = 681563520.

The previous prime is 1397941157. The next prime is 1397941177. The reversal of 1397941166 is 6611497931.

It is a self number, because there is not a number n which added to its sum of digits gives 1397941166.

It is a congruent number.

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, 220655 + ... + 226901.

It is an arithmetic number, because the mean of its divisors is an integer number (134324190).

Almost surely, 2^1397941166 is an apocalyptic number.

1397941166 is a deficient number, since it is larger than the sum of its proper divisors (751245874).

1397941166 is a wasteful number, since it uses less digits than its factorization.

1397941166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9019.

The product of its digits is 244944, while the sum is 47.

The square root of 1397941166 is about 37389.0514188312. The cubic root of 1397941166 is about 1118.1402933253.

The spelling of 1397941166 in words is "one billion, three hundred ninety-seven million, nine hundred forty-one thousand, one hundred sixty-six".