19020993 has 8 divisors (see below), whose sum is σ = 25409088. Its totient is φ = 12656784.

The previous prime is 19020961. The next prime is 19021039. The reversal of 19020993 is 39902091.

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

It is not a de Polignac number, because 19020993 - 2⁵ = 19020961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19020913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4021 + ... + 7362.

It is an arithmetic number, because the mean of its divisors is an integer number (3176136).

Almost surely, 2^19020993 is an apocalyptic number.

It is an amenable number.

19020993 is a deficient number, since it is larger than the sum of its proper divisors (6388095).

19020993 is a wasteful number, since it uses less digits than its factorization.

19020993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11943.

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

The square root of 19020993 is about 4361.3063409946. The cubic root of 19020993 is about 266.9384054638.

The spelling of 19020993 in words is "nineteen million, twenty thousand, nine hundred ninety-three".