190930 has 16 divisors (see below), whose sum is σ = 350424. Its totient is φ = 74880.

The previous prime is 190921. The next prime is 190979. The reversal of 190930 is 39091.

It can be written as a sum of positive squares in 4 ways, for example, as 36481 + 154449 = 191^2 + 393^2 .

It is an unprimeable number.

190930 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454 + ... + 766.

2¹⁹⁰⁹³⁰ is an apocalyptic number.

190930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190930 is a deficient number, since it is larger than the sum of its proper divisors (159494).

190930 is a wasteful number, since it uses less digits than its factorization.

190930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 190930 is about 436.9553752959. The cubic root of 190930 is about 57.5826159602.

The spelling of 190930 in words is "one hundred ninety thousand, nine hundred thirty".