163400122 has 4 divisors (see below), whose sum is σ = 245100186. Its totient is φ = 81700060.

The previous prime is 163400077. The next prime is 163400137. The reversal of 163400122 is 221004361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221004361 = 73 ⋅3027457.

It can be written as a sum of positive squares in only one way, i.e., 143784081 + 19616041 = 11991^2 + 4429^2 .

It is a super-2 number, since 2×163400122² = 53399199739229768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163400122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40850029 + ... + 40850032.

Almost surely, 2^163400122 is an apocalyptic number.

163400122 is a deficient number, since it is larger than the sum of its proper divisors (81700064).

163400122 is an equidigital number, since it uses as much as digits as its factorization.

163400122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81700063.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 163400122 is about 12782.8057170560. The cubic root of 163400122 is about 546.7021629902.

Adding to 163400122 its reverse (221004361), we get a palindrome (384404483).

The spelling of 163400122 in words is "one hundred sixty-three million, four hundred thousand, one hundred twenty-two".