1920993 has 8 divisors (see below), whose sum is σ = 2568000. Its totient is φ = 1277328.

The previous prime is 1920991. The next prime is 1921013. The reversal of 1920993 is 3990291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1920993 - 2¹ = 1920991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1920991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1263 + ... + 2331.

It is an arithmetic number, because the mean of its divisors is an integer number (321000).

2^1920993 is an apocalyptic number.

It is an amenable number.

1920993 is a deficient number, since it is larger than the sum of its proper divisors (647007).

1920993 is a wasteful number, since it uses less digits than its factorization.

1920993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 1920993 is about 1385.9989177485. The cubic root of 1920993 is about 124.3107235028.

It can be divided in two parts, 19 and 20993, that added together give a palindrome (21012).

The spelling of 1920993 in words is "one million, nine hundred twenty thousand, nine hundred ninety-three".