190890043 has 2 divisors, whose sum is σ = 190890044. Its totient is φ = 190890042.

The previous prime is 190890023. The next prime is 190890053. The reversal of 190890043 is 340098091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190890043 - 2¹³ = 190881851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190889990 and 190890008.

It is not a weakly prime, because it can be changed into another prime (190890013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95445021 + 95445022.

It is an arithmetic number, because the mean of its divisors is an integer number (95445022).

Almost surely, 2^190890043 is an apocalyptic number.

190890043 is a deficient number, since it is larger than the sum of its proper divisors (1).

190890043 is an equidigital number, since it uses as much as digits as its factorization.

190890043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 190890043 is about 13816.2962837368. The cubic root of 190890043 is about 575.7859880014.

The spelling of 190890043 in words is "one hundred ninety million, eight hundred ninety thousand, forty-three".