163164387690 has 32 divisors (see below), whose sum is σ = 435105034560. Its totient is φ = 43510503312.

The previous prime is 163164387677. The next prime is 163164387697. The reversal of 163164387690 is 96783461361.

It is a happy number.

163164387690 is a `hidden beast` number, since 16 + 3 + 164 + 387 + 6 + 90 = 666.

It is a super-2 number, since 2×163164387690² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (163164387697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302156004 + ... + 302156543.

It is an arithmetic number, because the mean of its divisors is an integer number (13597032330).

Almost surely, 2^163164387690 is an apocalyptic number.

163164387690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163164387690 is an abundant number, since it is smaller than the sum of its proper divisors (271940646870).

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

163164387690 is a wasteful number, since it uses less digits than its factorization.

163164387690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604312563 (or 604312557 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 163164387690 in words is "one hundred sixty-three billion, one hundred sixty-four million, three hundred eighty-seven thousand, six hundred ninety".