197615812 has 6 divisors (see below), whose sum is σ = 345827678. Its totient is φ = 98807904.

The previous prime is 197615809. The next prime is 197615819. The reversal of 197615812 is 218516791.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 177848896 + 19766916 = 13336^2 + 4446^2 .

It is not an unprimeable number, because it can be changed into a prime (197615819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24701973 + ... + 24701980.

Almost surely, 2^197615812 is an apocalyptic number.

It is an amenable number.

197615812 is a deficient number, since it is larger than the sum of its proper divisors (148211866).

197615812 is a wasteful number, since it uses less digits than its factorization.

197615812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49403957 (or 49403955 counting only the distinct ones).

The product of its digits is 30240, while the sum is 40.

The square root of 197615812 is about 14057.5891247397. The cubic root of 197615812 is about 582.4704493596.

The spelling of 197615812 in words is "one hundred ninety-seven million, six hundred fifteen thousand, eight hundred twelve".