1968194460 has 24 divisors (see below), whose sum is σ = 5510944656. Its totient is φ = 524851840.

The previous prime is 1968194441. The next prime is 1968194489. The reversal of 1968194460 is 644918691.

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, 16401561 + ... + 16401680.

It is an arithmetic number, because the mean of its divisors is an integer number (229622694).

Almost surely, 2^1968194460 is an apocalyptic number.

1968194460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1968194460 is an abundant number, since it is smaller than the sum of its proper divisors (3542750196).

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

1968194460 is a wasteful number, since it uses less digits than its factorization.

1968194460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32803253 (or 32803251 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1968194460 is about 44364.3377049630. The cubic root of 1968194460 is about 1253.2065853479.

The spelling of 1968194460 in words is "one billion, nine hundred sixty-eight million, one hundred ninety-four thousand, four hundred sixty".