163601982390 has 64 divisors (see below), whose sum is σ = 489531133440. Its totient is φ = 33995216640.

The previous prime is 163601982389. The next prime is 163601982403. The reversal of 163601982390 is 93289106361.

It is a super-2 number, since 2×163601982390² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35409375 + ... + 35413994.

It is an arithmetic number, because the mean of its divisors is an integer number (7648923960).

Almost surely, 2^163601982390 is an apocalyptic number.

163601982390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163601982390 is an abundant number, since it is smaller than the sum of its proper divisors (325929151050).

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

163601982390 is a wasteful number, since it uses less digits than its factorization.

163601982390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70823397.

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 163601982390 in words is "one hundred sixty-three billion, six hundred one million, nine hundred eighty-two thousand, three hundred ninety".