163375690 has 16 divisors (see below), whose sum is σ = 298898280. Its totient is φ = 64278720.

The previous prime is 163375657. The next prime is 163375697. The reversal of 163375690 is 96573361.

It can be written as a sum of positive squares in 4 ways, for example, as 80802121 + 82573569 = 8989^2 + 9087^2 .

It is a super-2 number, since 2×163375690² = 53383232165952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163375697) 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, 133305 + ... + 134524.

Almost surely, 2^163375690 is an apocalyptic number.

163375690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163375690 is a deficient number, since it is larger than the sum of its proper divisors (135522590).

163375690 is a wasteful number, since it uses less digits than its factorization.

163375690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267897.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 163375690 is about 12781.8500225906. The cubic root of 163375690 is about 546.6749135348.

The spelling of 163375690 in words is "one hundred sixty-three million, three hundred seventy-five thousand, six hundred ninety".