163347690 has 64 divisors (see below), whose sum is σ = 438141312. Its totient is φ = 38630400.

The previous prime is 163347677. The next prime is 163347697. The reversal of 163347690 is 96743361.

It is a super-2 number, since 2×163347690² = 53364935656672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163347697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7494 + ... + 19566.

It is an arithmetic number, because the mean of its divisors is an integer number (6845958).

Almost surely, 2^163347690 is an apocalyptic number.

163347690 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 163347690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219070656).

163347690 is an abundant number, since it is smaller than the sum of its proper divisors (274793622).

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

163347690 is a wasteful number, since it uses less digits than its factorization.

163347690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12135.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 163347690 is about 12780.7546725536. The cubic root of 163347690 is about 546.6436812829.

The spelling of 163347690 in words is "one hundred sixty-three million, three hundred forty-seven thousand, six hundred ninety".