1993900 has 36 divisors (see below), whose sum is σ = 4388608. Its totient is φ = 786240.

The previous prime is 1993877. The next prime is 1993921. The reversal of 1993900 is 93991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12622 + ... + 12778.

2^1993900 is an apocalyptic number.

1993900 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 1993900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194304).

1993900 is an abundant number, since it is smaller than the sum of its proper divisors (2394708).

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

1993900 is a wasteful number, since it uses less digits than its factorization.

1993900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 1993900 is about 1412.0552397127. The cubic root of 1993900 is about 125.8638825681.

The spelling of 1993900 in words is "one million, nine hundred ninety-three thousand, nine hundred".