1993464 has 64 divisors (see below), whose sum is σ = 6048000. Its totient is φ = 603360.

The previous prime is 1993457. The next prime is 1993477. The reversal of 1993464 is 4643991.

1993464 is a `hidden beast` number, since 199 + 3 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1957 + ... + 2795.

It is an arithmetic number, because the mean of its divisors is an integer number (94500).

2^1993464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1993464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3024000).

1993464 is an abundant number, since it is smaller than the sum of its proper divisors (4054536).

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

1993464 is a wasteful number, since it uses less digits than its factorization.

1993464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 855 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 1993464 is about 1411.9008463770. The cubic root of 1993464 is about 125.8547078096.

It can be divided in two parts, 199 and 3464, that added together give a palindrome (3663).

The spelling of 1993464 in words is "one million, nine hundred ninety-three thousand, four hundred sixty-four".