1968533830 has 16 divisors (see below), whose sum is σ = 3543884784. Its totient is φ = 787297120.

The previous prime is 1968533807. The next prime is 1968533863. The reversal of 1968533830 is 383358691.

It is a congruent number.

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, 97704 + ... + 116116.

It is an arithmetic number, because the mean of its divisors is an integer number (221492799).

Almost surely, 2^1968533830 is an apocalyptic number.

1968533830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1968533830 is a deficient number, since it is larger than the sum of its proper divisors (1575350954).

1968533830 is a wasteful number, since it uses less digits than its factorization.

1968533830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29111.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 1968533830 is about 44368.1623464394. The cubic root of 1968533830 is about 1253.2786101208.

The spelling of 1968533830 in words is "one billion, nine hundred sixty-eight million, five hundred thirty-three thousand, eight hundred thirty".