190117870 has 8 divisors (see below), whose sum is σ = 342212184. Its totient is φ = 76047144.

The previous prime is 190117859. The next prime is 190117969. The reversal of 190117870 is 78711091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×190117870² = 72289608986673800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9505884 + ... + 9505903.

It is an arithmetic number, because the mean of its divisors is an integer number (42776523).

Almost surely, 2^190117870 is an apocalyptic number.

190117870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190117870 is a deficient number, since it is larger than the sum of its proper divisors (152094314).

190117870 is a wasteful number, since it uses less digits than its factorization.

190117870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19011794.

The product of its (nonzero) digits is 3528, while the sum is 34.

The square root of 190117870 is about 13788.3236834649. The cubic root of 190117870 is about 575.0085644597.

The spelling of 190117870 in words is "one hundred ninety million, one hundred seventeen thousand, eight hundred seventy".