196990137 has 12 divisors (see below), whose sum is σ = 295080240. Its totient is φ = 131326596.

The previous prime is 196990063. The next prime is 196990153. The reversal of 196990137 is 731099691.

It is not a de Polignac number, because 196990137 - 2¹¹ = 196988089 is a prime.

It is a super-2 number, since 2×196990137² = 77610228150557538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 196990092 and 196990101.

It is not an unprimeable number, because it can be changed into a prime (196990637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405087 + ... + 405572.

It is an arithmetic number, because the mean of its divisors is an integer number (24590020).

Almost surely, 2^196990137 is an apocalyptic number.

It is an amenable number.

196990137 is a deficient number, since it is larger than the sum of its proper divisors (98090103).

196990137 is an frugal number, since it uses more digits than its factorization.

196990137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810674 (or 810662 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 196990137 is about 14035.3174883933. The cubic root of 196990137 is about 581.8550760421.

The spelling of 196990137 in words is "one hundred ninety-six million, nine hundred ninety thousand, one hundred thirty-seven".