196892491 has 2 divisors, whose sum is σ = 196892492. Its totient is φ = 196892490.

The previous prime is 196892483. The next prime is 196892539. The reversal of 196892491 is 194298691.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (194298691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196892491 - 2³ = 196892483 is a prime.

It is not a weakly prime, because it can be changed into another prime (196892401) 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, 98446245 + 98446246.

It is an arithmetic number, because the mean of its divisors is an integer number (98446246).

Almost surely, 2^196892491 is an apocalyptic number.

196892491 is a deficient number, since it is larger than the sum of its proper divisors (1).

196892491 is an equidigital number, since it uses as much as digits as its factorization.

196892491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 49.

The square root of 196892491 is about 14031.8384754101. The cubic root of 196892491 is about 581.7589202787.

The spelling of 196892491 in words is "one hundred ninety-six million, eight hundred ninety-two thousand, four hundred ninety-one".