1993848340 has 96 divisors (see below), whose sum is σ = 4677450624. Its totient is φ = 707765760.

The previous prime is 1993848331. The next prime is 1993848361. The reversal of 1993848340 is 438483991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3579342 + ... + 3579898.

It is an arithmetic number, because the mean of its divisors is an integer number (48723444).

Almost surely, 2^1993848340 is an apocalyptic number.

1993848340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1993848340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2338725312).

1993848340 is an abundant number, since it is smaller than the sum of its proper divisors (2683602284).

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

1993848340 is a wasteful number, since it uses less digits than its factorization.

1993848340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 1993848340 is about 44652.5289317414. The cubic root of 1993848340 is about 1258.6279555535.

The spelling of 1993848340 in words is "one billion, nine hundred ninety-three million, eight hundred forty-eight thousand, three hundred forty".