1968408231 has 8 divisors (see below), whose sum is σ = 2626264704. Its totient is φ = 1311411960.

The previous prime is 1968408203. The next prime is 1968408311. The reversal of 1968408231 is 1328048691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1968408231 - 2⁵ = 1968408199 is a prime.

It is a super-2 number, since 2×1968408231² = 7749261927737098722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968409231) 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 7 ways as a sum of consecutive naturals, for example, 209691 + ... + 218876.

It is an arithmetic number, because the mean of its divisors is an integer number (328283088).

Almost surely, 2^1968408231 is an apocalyptic number.

1968408231 is a deficient number, since it is larger than the sum of its proper divisors (657856473).

1968408231 is a wasteful number, since it uses less digits than its factorization.

1968408231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430101.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1968408231 is about 44366.7469057627. The cubic root of 1968408231 is about 1253.2519551072.

The spelling of 1968408231 in words is "one billion, nine hundred sixty-eight million, four hundred eight thousand, two hundred thirty-one".