197808964782 has 64 divisors (see below), whose sum is σ = 470004353280. Its totient is φ = 54709459200.

The previous prime is 197808964739. The next prime is 197808964799. The reversal of 197808964782 is 287469808791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1218844 + ... + 1371567.

It is an arithmetic number, because the mean of its divisors is an integer number (7343818020).

Almost surely, 2^197808964782 is an apocalyptic number.

197808964782 is an abundant number, since it is smaller than the sum of its proper divisors (272195388498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197808964782 is a wasteful number, since it uses less digits than its factorization.

197808964782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590529.

The product of its (nonzero) digits is 97542144, while the sum is 69.

The spelling of 197808964782 in words is "one hundred ninety-seven billion, eight hundred eight million, nine hundred sixty-four thousand, seven hundred eighty-two".