97930191844 has 27 divisors (see below), whose sum is σ = 179179349923. Its totient is φ = 46829294072.

The previous prime is 97930191839. The next prime is 97930191851. The reversal of 97930191844 is 44819103979.

The square root of 97930191844 is 312938.

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

It is a Duffinian number.

It is an unprimeable number.

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, 14391747 + ... + 14398549.

Almost surely, 2^97930191844 is an apocalyptic number.

97930191844 is the 312938-th square number.

It is an amenable number.

97930191844 is a deficient number, since it is larger than the sum of its proper divisors (81249158079).

97930191844 is an frugal number, since it uses more digits than its factorization.

97930191844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13656 (or 6828 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 97930191844 in words is "ninety-seven billion, nine hundred thirty million, one hundred ninety-one thousand, eight hundred forty-four".