1968991230 has 32 divisors (see below), whose sum is σ = 4743165600. Its totient is φ = 523110272.

The previous prime is 1968991207. The next prime is 1968991231. The reversal of 1968991230 is 321998691.

It is a self number, because there is not a number n which added to its sum of digits gives 1968991230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968991231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113925 + ... + 130064.

It is an arithmetic number, because the mean of its divisors is an integer number (148223925).

Almost surely, 2^1968991230 is an apocalyptic number.

1968991230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1968991230 is an abundant number, since it is smaller than the sum of its proper divisors (2774174370).

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

1968991230 is a wasteful number, since it uses less digits than its factorization.

1968991230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244268.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 1968991230 is about 44373.3166441275. The cubic root of 1968991230 is about 1253.3756714013.

The spelling of 1968991230 in words is "one billion, nine hundred sixty-eight million, nine hundred ninety-one thousand, two hundred thirty".