1968588738 has 64 divisors (see below), whose sum is σ = 4415706240. Its totient is φ = 650073600.

The previous prime is 1968588709. The next prime is 1968588793. The reversal of 1968588738 is 8378858691.

1968588738 is a `hidden beast` number, since 19 + 6 + 8 + 588 + 7 + 38 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4307406 + ... + 4307862.

It is an arithmetic number, because the mean of its divisors is an integer number (68995410).

Almost surely, 2^1968588738 is an apocalyptic number.

1968588738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1968588738 is an abundant number, since it is smaller than the sum of its proper divisors (2447117502).

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

1968588738 is a wasteful number, since it uses less digits than its factorization.

1968588738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1034 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The square root of 1968588738 is about 44368.7811191608. The cubic root of 1968588738 is about 1253.2902625125.

The spelling of 1968588738 in words is "one billion, nine hundred sixty-eight million, five hundred eighty-eight thousand, seven hundred thirty-eight".