290190919 has 2 divisors, whose sum is σ = 290190920. Its totient is φ = 290190918.

The previous prime is 290190917. The next prime is 290190949. The reversal of 290190919 is 919091092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 290190919 - 2¹ = 290190917 is a prime.

It is a super-2 number, since 2×290190919² = 168421538940129122, which contains 22 as substring.

Together with 290190917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290190913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145095459 + 145095460.

It is an arithmetic number, because the mean of its divisors is an integer number (145095460).

Almost surely, 2^290190919 is an apocalyptic number.

290190919 is a deficient number, since it is larger than the sum of its proper divisors (1).

290190919 is an equidigital number, since it uses as much as digits as its factorization.

290190919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 290190919 is about 17034.9910184890. The cubic root of 290190919 is about 662.0558173166.

The spelling of 290190919 in words is "two hundred ninety million, one hundred ninety thousand, nine hundred nineteen".