163807122690 has 192 divisors, whose sum is σ = 467785929600. Its totient is φ = 40677012864.

The previous prime is 163807122679. The next prime is 163807122701. The reversal of 163807122690 is 96221708361.

163807122690 is a `hidden beast` number, since 1 + 6 + 380 + 7 + 1 + 2 + 269 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (163807122679) and next prime (163807122701).

It is a super-2 number, since 2×163807122690² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17852944 + ... + 17862116.

It is an arithmetic number, because the mean of its divisors is an integer number (2436385050).

Almost surely, 2^163807122690 is an apocalyptic number.

163807122690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163807122690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233892964800).

163807122690 is an abundant number, since it is smaller than the sum of its proper divisors (303978806910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163807122690 is a wasteful number, since it uses less digits than its factorization.

163807122690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9326 (or 9261 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 163807122690 in words is "one hundred sixty-three billion, eight hundred seven million, one hundred twenty-two thousand, six hundred ninety".