190348993 has 2 divisors, whose sum is σ = 190348994. Its totient is φ = 190348992.

The previous prime is 190348969. The next prime is 190349059. The reversal of 190348993 is 399843091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171269569 + 19079424 = 13087^2 + 4368^2 .

It is a cyclic number.

It is not a de Polignac number, because 190348993 - 2⁹ = 190348481 is a prime.

It is a super-2 number, since 2×190348993² = 72465478272228098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190348933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95174496 + 95174497.

It is an arithmetic number, because the mean of its divisors is an integer number (95174497).

Almost surely, 2^190348993 is an apocalyptic number.

It is an amenable number.

190348993 is a deficient number, since it is larger than the sum of its proper divisors (1).

190348993 is an equidigital number, since it uses as much as digits as its factorization.

190348993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 190348993 is about 13796.7022509004. The cubic root of 190348993 is about 575.2414794175.

The spelling of 190348993 in words is "one hundred ninety million, three hundred forty-eight thousand, nine hundred ninety-three".