196518986 has 12 divisors (see below), whose sum is σ = 302148726. Its totient is φ = 95861280.

The previous prime is 196518979. The next prime is 196519021. The reversal of 196518986 is 689815691.

196518986 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 16556761 + 179962225 = 4069^2 + 13415^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25865 + ... + 32588.

Almost surely, 2^196518986 is an apocalyptic number.

196518986 is a deficient number, since it is larger than the sum of its proper divisors (105629740).

196518986 is an equidigital number, since it uses as much as digits as its factorization.

196518986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58537 (or 58496 counting only the distinct ones).

The product of its digits is 933120, while the sum is 53.

The square root of 196518986 is about 14018.5229607117. The cubic root of 196518986 is about 581.3908219170.

The spelling of 196518986 in words is "one hundred ninety-six million, five hundred eighteen thousand, nine hundred eighty-six".