196124581 has 2 divisors, whose sum is σ = 196124582. Its totient is φ = 196124580.

The previous prime is 196124573. The next prime is 196124609. The reversal of 196124581 is 185421691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193349025 + 2775556 = 13905^2 + 1666^2 .

It is a cyclic number.

It is not a de Polignac number, because 196124581 - 2³ = 196124573 is a prime.

It is a super-2 number, since 2×196124581² = 76929702544851122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 196124581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196124881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98062290 + 98062291.

It is an arithmetic number, because the mean of its divisors is an integer number (98062291).

Almost surely, 2^196124581 is an apocalyptic number.

It is an amenable number.

196124581 is a deficient number, since it is larger than the sum of its proper divisors (1).

196124581 is an equidigital number, since it uses as much as digits as its factorization.

196124581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 196124581 is about 14004.4486146367. The cubic root of 196124581 is about 581.0016194559.

The spelling of 196124581 in words is "one hundred ninety-six million, one hundred twenty-four thousand, five hundred eighty-one".