291982445316 has 27 divisors (see below), whose sum is σ = 738074932231. Its totient is φ = 97326401064.

The previous prime is 291982445311. The next prime is 291982445347. The reversal of 291982445316 is 613544289192.

It is a happy number.

The square root of 291982445316 is 540354.

It is a perfect power (a square), and thus also a powerful number.

291982445316 is a `hidden beast` number, since 2 + 9 + 198 + 2 + 445 + 3 + 1 + 6 = 666.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (291982445311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3197095 + ... + 3287153.

Almost surely, 2^291982445316 is an apocalyptic number.

291982445316 is the 540354-th square number.

It is an amenable number.

291982445316 is an abundant number, since it is smaller than the sum of its proper divisors (446092486915).

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

291982445316 is an frugal number, since it uses more digits than its factorization.

291982445316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180128 (or 90064 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 291982445316 in words is "two hundred ninety-one billion, nine hundred eighty-two million, four hundred forty-five thousand, three hundred sixteen".