163102981 has 8 divisors (see below), whose sum is σ = 174408984. Its totient is φ = 151987200.

The previous prime is 163102969. The next prime is 163103027. The reversal of 163102981 is 189201361.

It can be written as a sum of positive squares in 4 ways, for example, as 50552100 + 112550881 = 7110^2 + 10609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163102981 - 2²⁷ = 28885253 is a prime.

It is a super-2 number, since 2×163102981² = 53205164822172722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163102081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45780 + ... + 49213.

It is an arithmetic number, because the mean of its divisors is an integer number (21801123).

Almost surely, 2^163102981 is an apocalyptic number.

It is an amenable number.

163102981 is a deficient number, since it is larger than the sum of its proper divisors (11306003).

163102981 is a wasteful number, since it uses less digits than its factorization.

163102981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95111.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 163102981 is about 12771.1777452199. The cubic root of 163102981 is about 546.3705716494.

It can be divided in two parts, 16310 and 2981, that added together give a palindrome (19291).

The spelling of 163102981 in words is "one hundred sixty-three million, one hundred two thousand, nine hundred eighty-one".