190137830 has 16 divisors (see below), whose sum is σ = 350208144. Its totient is φ = 74286240.

The previous prime is 190137817. The next prime is 190137839. The reversal of 190137830 is 38731091.

It is a super-3 number, since 3×190137830³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190137839) 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, 220661 + ... + 221520.

It is an arithmetic number, because the mean of its divisors is an integer number (21888009).

Almost surely, 2^190137830 is an apocalyptic number.

190137830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190137830 is a deficient number, since it is larger than the sum of its proper divisors (160070314).

190137830 is a wasteful number, since it uses less digits than its factorization.

190137830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442231.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 190137830 is about 13789.0474652893. The cubic root of 190137830 is about 575.0286866595.

The spelling of 190137830 in words is "one hundred ninety million, one hundred thirty-seven thousand, eight hundred thirty".