1968972738 has 16 divisors (see below), whose sum is σ = 3944077536. Its totient is φ = 655302240.

The previous prime is 1968972703. The next prime is 1968972749. The reversal of 1968972738 is 8372798691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251323 + ... + 259038.

It is an arithmetic number, because the mean of its divisors is an integer number (246504846).

Almost surely, 2^1968972738 is an apocalyptic number.

1968972738 is an abundant number, since it is smaller than the sum of its proper divisors (1975104798).

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

1968972738 is a wasteful number, since it uses less digits than its factorization.

1968972738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511009.

The product of its digits is 9144576, while the sum is 60.

The square root of 1968972738 is about 44373.1082751704. The cubic root of 1968972738 is about 1253.3717476500.

The spelling of 1968972738 in words is "one billion, nine hundred sixty-eight million, nine hundred seventy-two thousand, seven hundred thirty-eight".