163797426 has 48 divisors (see below), whose sum is σ = 387616320. Its totient is φ = 49684320.

The previous prime is 163797391. The next prime is 163797427. The reversal of 163797426 is 624797361.

163797426 is a `hidden beast` number, since 1 + 637 + 9 + 7 + 4 + 2 + 6 = 666.

163797426 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163797427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11685 + ... + 21543.

It is an arithmetic number, because the mean of its divisors is an integer number (8075340).

Almost surely, 2^163797426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163797426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193808160).

163797426 is an abundant number, since it is smaller than the sum of its proper divisors (223818894).

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

163797426 is a wasteful number, since it uses less digits than its factorization.

163797426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9951 (or 9948 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 163797426 is about 12798.3368450748. The cubic root of 163797426 is about 547.1449026614.

The spelling of 163797426 in words is "one hundred sixty-three million, seven hundred ninety-seven thousand, four hundred twenty-six".