163873770 has 32 divisors (see below), whose sum is σ = 394020288. Its totient is φ = 43619328.

The previous prime is 163873763. The next prime is 163873847. The reversal of 163873770 is 77378361.

It is a super-2 number, since 2×163873770² = 53709224988025800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12577 + ... + 22043.

It is an arithmetic number, because the mean of its divisors is an integer number (12313134).

Almost surely, 2^163873770 is an apocalyptic number.

163873770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163873770 is an abundant number, since it is smaller than the sum of its proper divisors (230146518).

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

163873770 is a wasteful number, since it uses less digits than its factorization.

163873770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10054.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 163873770 is about 12801.3190726581. The cubic root of 163873770 is about 547.2298953329.

The spelling of 163873770 in words is "one hundred sixty-three million, eight hundred seventy-three thousand, seven hundred seventy".