163442986 has 16 divisors (see below), whose sum is σ = 287761536. Its totient is φ = 68153616.

The previous prime is 163442977. The next prime is 163442989. The reversal of 163442986 is 689244361.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (163442989) 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, 157246 + ... + 158281.

It is an arithmetic number, because the mean of its divisors is an integer number (17985096).

Almost surely, 2^163442986 is an apocalyptic number.

163442986 is a deficient number, since it is larger than the sum of its proper divisors (124318550).

163442986 is a wasteful number, since it uses less digits than its factorization.

163442986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315573.

The product of its digits is 248832, while the sum is 43.

The square root of 163442986 is about 12784.4822343339. The cubic root of 163442986 is about 546.7499634293.

The spelling of 163442986 in words is "one hundred sixty-three million, four hundred forty-two thousand, nine hundred eighty-six".