968192021 has 4 divisors (see below), whose sum is σ = 968270700. Its totient is φ = 968113344.

The previous prime is 968192011. The next prime is 968192033. The reversal of 968192021 is 120291869.

968192021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120291869 = 19 ⋅6331151.

It can be written as a sum of positive squares in 2 ways, for example, as 223502500 + 744689521 = 14950^2 + 27289^2 .

It is a cyclic number.

It is not a de Polignac number, because 968192021 - 2⁶ = 968191957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (968192011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16436 + ... + 46973.

It is an arithmetic number, because the mean of its divisors is an integer number (242067675).

Almost surely, 2^968192021 is an apocalyptic number.

It is an amenable number.

968192021 is a deficient number, since it is larger than the sum of its proper divisors (78679).

968192021 is a wasteful number, since it uses less digits than its factorization.

968192021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78678.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 968192021 is about 31115.7841135331. The cubic root of 968192021 is about 989.2828942877.

The spelling of 968192021 in words is "nine hundred sixty-eight million, one hundred ninety-two thousand, twenty-one".