163661802 has 16 divisors (see below), whose sum is σ = 334288512. Its totient is φ = 53393120.

The previous prime is 163661777. The next prime is 163661809. The reversal of 163661802 is 208166361.

163661802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163661809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289899 + ... + 290462.

It is an arithmetic number, because the mean of its divisors is an integer number (20893032).

Almost surely, 2^163661802 is an apocalyptic number.

163661802 is an abundant number, since it is smaller than the sum of its proper divisors (170626710).

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

163661802 is a wasteful number, since it uses less digits than its factorization.

163661802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580413.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 163661802 is about 12793.0372468777. The cubic root of 163661802 is about 546.9938492691.

The spelling of 163661802 in words is "one hundred sixty-three million, six hundred sixty-one thousand, eight hundred two".