190105057 has 2 divisors, whose sum is σ = 190105058. Its totient is φ = 190105056.

The previous prime is 190105043. The next prime is 190105061. The reversal of 190105057 is 750501091.

190105057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147646801 + 42458256 = 12151^2 + 6516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190105057 is a prime.

It is a super-2 number, since 2×190105057² = 72279865393946498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190105007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95052528 + 95052529.

It is an arithmetic number, because the mean of its divisors is an integer number (95052529).

Almost surely, 2^190105057 is an apocalyptic number.

It is an amenable number.

190105057 is a deficient number, since it is larger than the sum of its proper divisors (1).

190105057 is an equidigital number, since it uses as much as digits as its factorization.

190105057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 190105057 is about 13787.8590433758. The cubic root of 190105057 is about 574.9956465959.

The spelling of 190105057 in words is "one hundred ninety million, one hundred five thousand, fifty-seven".