190312919 has 2 divisors, whose sum is σ = 190312920. Its totient is φ = 190312918.

The previous prime is 190312907. The next prime is 190312921. The reversal of 190312919 is 919213091.

It is a strong prime.

It is an emirp because it is prime and its reverse (919213091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190312919 - 2⁸ = 190312663 is a prime.

It is a super-2 number, since 2×190312919² = 72438014276601122, which contains 22 as substring.

Together with 190312921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190312319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95156459 + 95156460.

It is an arithmetic number, because the mean of its divisors is an integer number (95156460).

Almost surely, 2^190312919 is an apocalyptic number.

190312919 is a deficient number, since it is larger than the sum of its proper divisors (1).

190312919 is an equidigital number, since it uses as much as digits as its factorization.

190312919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 190312919 is about 13795.3948475569. The cubic root of 190312919 is about 575.2051381480.

The spelling of 190312919 in words is "one hundred ninety million, three hundred twelve thousand, nine hundred nineteen".