190985461 has 2 divisors, whose sum is σ = 190985462. Its totient is φ = 190985460.

The previous prime is 190985441. The next prime is 190985507. The reversal of 190985461 is 164589091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190716100 + 269361 = 13810^2 + 519^2 .

It is an emirp because it is prime and its reverse (164589091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190985461 - 2²³ = 182596853 is a prime.

It is a super-3 number, since 3×190985461³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190985441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95492730 + 95492731.

It is an arithmetic number, because the mean of its divisors is an integer number (95492731).

Almost surely, 2^190985461 is an apocalyptic number.

It is an amenable number.

190985461 is a deficient number, since it is larger than the sum of its proper divisors (1).

190985461 is an equidigital number, since it uses as much as digits as its factorization.

190985461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 190985461 is about 13819.7489485157. The cubic root of 190985461 is about 575.8819091836.

The spelling of 190985461 in words is "one hundred ninety million, nine hundred eighty-five thousand, four hundred sixty-one".