199274919 has 32 divisors (see below), whose sum is σ = 278484480. Its totient is φ = 126672000.

The previous prime is 199274897. The next prime is 199274923. The reversal of 199274919 is 919472991.

It is not a de Polignac number, because 199274919 - 2⁷ = 199274791 is a prime.

It is a super-2 number, since 2×199274919² = 79420986684913122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199274939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1269189 + ... + 1269345.

It is an arithmetic number, because the mean of its divisors is an integer number (8702640).

Almost surely, 2^199274919 is an apocalyptic number.

199274919 is a deficient number, since it is larger than the sum of its proper divisors (79209561).

199274919 is a wasteful number, since it uses less digits than its factorization.

199274919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 367416, while the sum is 51.

The square root of 199274919 is about 14116.4768621636. The cubic root of 199274919 is about 584.0959753051.

The spelling of 199274919 in words is "one hundred ninety-nine million, two hundred seventy-four thousand, nine hundred nineteen".