1993549620 has 48 divisors (see below), whose sum is σ = 5584501440. Its totient is φ = 531369216.

The previous prime is 1993549619. The next prime is 1993549651. The reversal of 1993549620 is 269453991.

It is a self number, because there is not a number n which added to its sum of digits gives 1993549620.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151671 + ... + 164289.

It is an arithmetic number, because the mean of its divisors is an integer number (116343780).

Almost surely, 2^1993549620 is an apocalyptic number.

1993549620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1993549620 is an abundant number, since it is smaller than the sum of its proper divisors (3590951820).

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

1993549620 is a wasteful number, since it uses less digits than its factorization.

1993549620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15264 (or 15262 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 1993549620 is about 44649.1838671212. The cubic root of 1993549620 is about 1258.5650961887.

The spelling of 1993549620 in words is "one billion, nine hundred ninety-three million, five hundred forty-nine thousand, six hundred twenty".