19839045 has 32 divisors (see below), whose sum is σ = 33436800. Its totient is φ = 10029824.

The previous prime is 19839023. The next prime is 19839047. The reversal of 19839045 is 54093891.

It is not a de Polignac number, because 19839045 - 2¹² = 19834949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19838994 and 19839012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19839047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25279 + ... + 26051.

It is an arithmetic number, because the mean of its divisors is an integer number (1044900).

Almost surely, 2^19839045 is an apocalyptic number.

19839045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19839045 is a deficient number, since it is larger than the sum of its proper divisors (13597755).

19839045 is a wasteful number, since it uses less digits than its factorization.

19839045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 19839045 is about 4454.1042870593. The cubic root of 19839045 is about 270.7116343694.

The spelling of 19839045 in words is "nineteen million, eight hundred thirty-nine thousand, forty-five".