1993447056 has 40 divisors (see below), whose sum is σ = 5157705600. Its totient is φ = 663454336.

The previous prime is 1993447021. The next prime is 1993447067. The reversal of 1993447056 is 6507443991.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1993446996 and 1993447014.

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, 456 + ... + 63143.

It is an arithmetic number, because the mean of its divisors is an integer number (128942640).

Almost surely, 2^1993447056 is an apocalyptic number.

1993447056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1993447056 is an abundant number, since it is smaller than the sum of its proper divisors (3164258544).

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

1993447056 is a wasteful number, since it uses less digits than its factorization.

1993447056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64263 (or 64257 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 1993447056 is about 44648.0352983197. The cubic root of 1993447056 is about 1258.5435122958.

The spelling of 1993447056 in words is "one billion, nine hundred ninety-three million, four hundred forty-seven thousand, fifty-six".