1968473550 has 96 divisors (see below), whose sum is σ = 5021178624. Its totient is φ = 510048000.

The previous prime is 1968473539. The next prime is 1968473623. The reversal of 1968473550 is 553748691.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1968473550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2035167 + ... + 2036133.

It is an arithmetic number, because the mean of its divisors is an integer number (52303944).

Almost surely, 2^1968473550 is an apocalyptic number.

1968473550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1968473550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2510589312).

1968473550 is an abundant number, since it is smaller than the sum of its proper divisors (3052705074).

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

1968473550 is a wasteful number, since it uses less digits than its factorization.

1968473550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 1968473550 is about 44367.4830252968. The cubic root of 1968473550 is about 1253.2658174517.

The spelling of 1968473550 in words is "one billion, nine hundred sixty-eight million, four hundred seventy-three thousand, five hundred fifty".