1968637479 has 8 divisors (see below), whose sum is σ = 2715362160. Its totient is φ = 1267168896.

The previous prime is 1968637471. The next prime is 1968637499. The reversal of 1968637479 is 9747368691.

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

It is not a de Polignac number, because 1968637479 - 2³ = 1968637471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968637471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11313922 + ... + 11314095.

It is an arithmetic number, because the mean of its divisors is an integer number (339420270).

Almost surely, 2^1968637479 is an apocalyptic number.

1968637479 is a deficient number, since it is larger than the sum of its proper divisors (746724681).

1968637479 is a wasteful number, since it uses less digits than its factorization.

1968637479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22628049.

The product of its digits is 13716864, while the sum is 60.

The square root of 1968637479 is about 44369.3303871041. The cubic root of 1968637479 is about 1253.3006059827.

The spelling of 1968637479 in words is "one billion, nine hundred sixty-eight million, six hundred thirty-seven thousand, four hundred seventy-nine".