190111657 has 2 divisors, whose sum is σ = 190111658. Its totient is φ = 190111656.

The previous prime is 190111619. The next prime is 190111673. The reversal of 190111657 is 756111091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153859216 + 36252441 = 12404^2 + 6021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190111657 is a prime.

It is a super-2 number, since 2×190111657² = 72284884254571298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190111687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95055828 + 95055829.

It is an arithmetic number, because the mean of its divisors is an integer number (95055829).

Almost surely, 2^190111657 is an apocalyptic number.

It is an amenable number.

190111657 is a deficient number, since it is larger than the sum of its proper divisors (1).

190111657 is an equidigital number, since it uses as much as digits as its factorization.

190111657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 31.

The square root of 190111657 is about 13788.0983823006. The cubic root of 190111657 is about 575.0023006839.

The spelling of 190111657 in words is "one hundred ninety million, one hundred eleven thousand, six hundred fifty-seven".