19893345 has 16 divisors (see below), whose sum is σ = 31967232. Its totient is φ = 10563840.

The previous prime is 19893337. The next prime is 19893347. The reversal of 19893345 is 54339891.

It is not a de Polignac number, because 19893345 - 2³ = 19893337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19893297 and 19893306.

It is not an unprimeable number, because it can be changed into a prime (19893347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864 + ... + 6366.

It is an arithmetic number, because the mean of its divisors is an integer number (1997952).

Almost surely, 2^19893345 is an apocalyptic number.

19893345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19893345 is a deficient number, since it is larger than the sum of its proper divisors (12073887).

19893345 is a wasteful number, since it uses less digits than its factorization.

19893345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752.

The product of its digits is 116640, while the sum is 42.

The square root of 19893345 is about 4460.1956235125. The cubic root of 19893345 is about 270.9583910555.

The spelling of 19893345 in words is "nineteen million, eight hundred ninety-three thousand, three hundred forty-five".