19849795 has 32 divisors (see below), whose sum is σ = 29282688. Its totient is φ = 12607488.

The previous prime is 19849771. The next prime is 19849799. The reversal of 19849795 is 59794891.

It is a 13-Lehmer number, since φ(19849795) divides (19849795-1)¹³.

It is a cyclic number.

It is not a de Polignac number, because 19849795 - 2⁹ = 19849283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19849799) 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, 43207 + ... + 43663.

It is an arithmetic number, because the mean of its divisors is an integer number (915084).

Almost surely, 2^19849795 is an apocalyptic number.

19849795 is a deficient number, since it is larger than the sum of its proper divisors (9432893).

19849795 is a wasteful number, since it uses less digits than its factorization.

19849795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559.

The product of its digits is 816480, while the sum is 52.

The square root of 19849795 is about 4455.3108757976. The cubic root of 19849795 is about 270.7605215445.

The spelling of 19849795 in words is "nineteen million, eight hundred forty-nine thousand, seven hundred ninety-five".