163150681 has 2 divisors, whose sum is σ = 163150682. Its totient is φ = 163150680.

The previous prime is 163150667. The next prime is 163150709. The reversal of 163150681 is 186051361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118461456 + 44689225 = 10884^2 + 6685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163150681 is a prime.

It is a super-2 number, since 2×163150681² = 53236289421527522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163150601) by changing a digit.

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 as a sum of consecutive naturals, namely, 81575340 + 81575341.

It is an arithmetic number, because the mean of its divisors is an integer number (81575341).

Almost surely, 2^163150681 is an apocalyptic number.

It is an amenable number.

163150681 is a deficient number, since it is larger than the sum of its proper divisors (1).

163150681 is an equidigital number, since it uses as much as digits as its factorization.

163150681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 163150681 is about 12773.0450950429. The cubic root of 163150681 is about 546.4238290779.

The spelling of 163150681 in words is "one hundred sixty-three million, one hundred fifty thousand, six hundred eighty-one".