190939843 has 2 divisors, whose sum is σ = 190939844. Its totient is φ = 190939842.

The previous prime is 190939831. The next prime is 190939849. The reversal of 190939843 is 348939091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190939843 - 2²⁵ = 157385411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190939793 and 190939802.

It is not a weakly prime, because it can be changed into another prime (190939849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95469921 + 95469922.

It is an arithmetic number, because the mean of its divisors is an integer number (95469922).

Almost surely, 2^190939843 is an apocalyptic number.

190939843 is a deficient number, since it is larger than the sum of its proper divisors (1).

190939843 is an equidigital number, since it uses as much as digits as its factorization.

190939843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 190939843 is about 13818.0983858127. The cubic root of 190939843 is about 575.8360546062.

The spelling of 190939843 in words is "one hundred ninety million, nine hundred thirty-nine thousand, eight hundred forty-three".