196140787 has 2 divisors, whose sum is σ = 196140788. Its totient is φ = 196140786.

The previous prime is 196140779. The next prime is 196140797. The reversal of 196140787 is 787041691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196140787 - 2³ = 196140779 is a prime.

It is not a weakly prime, because it can be changed into another prime (196140797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98070393 + 98070394.

It is an arithmetic number, because the mean of its divisors is an integer number (98070394).

Almost surely, 2^196140787 is an apocalyptic number.

196140787 is a deficient number, since it is larger than the sum of its proper divisors (1).

196140787 is an equidigital number, since it uses as much as digits as its factorization.

196140787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 196140787 is about 14005.0272045434. The cubic root of 196140787 is about 581.0176219594.

The spelling of 196140787 in words is "one hundred ninety-six million, one hundred forty thousand, seven hundred eighty-seven".