196981699 has 4 divisors (see below), whose sum is σ = 198532864. Its totient is φ = 195430536.

The previous prime is 196981693. The next prime is 196981711. The reversal of 196981699 is 996189691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996189691 = 7 ⋅142312813.

It is a cyclic number.

It is not a de Polignac number, because 196981699 - 2⁷ = 196981571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196981693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775392 + ... + 775645.

It is an arithmetic number, because the mean of its divisors is an integer number (49633216).

Almost surely, 2^196981699 is an apocalyptic number.

196981699 is a deficient number, since it is larger than the sum of its proper divisors (1551165).

196981699 is a wasteful number, since it uses less digits than its factorization.

196981699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551164.

The product of its digits is 1889568, while the sum is 58.

The square root of 196981699 is about 14035.0168863454. The cubic root of 196981699 is about 581.8467680742.

The spelling of 196981699 in words is "one hundred ninety-six million, nine hundred eighty-one thousand, six hundred ninety-nine".