19918095 has 16 divisors (see below), whose sum is σ = 32346240. Its totient is φ = 10463904.

The previous prime is 19918081. The next prime is 19918097. The reversal of 19918095 is 59081991.

It is not a de Polignac number, because 19918095 - 2¹⁷ = 19787023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19918097) 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, 8905 + ... + 10914.

It is an arithmetic number, because the mean of its divisors is an integer number (2021640).

Almost surely, 2^19918095 is an apocalyptic number.

19918095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19918095 is a deficient number, since it is larger than the sum of its proper divisors (12428145).

19918095 is a wasteful number, since it uses less digits than its factorization.

19918095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19894.

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 19918095 is about 4462.9693030537. The cubic root of 19918095 is about 271.0707140619.

The spelling of 19918095 in words is "nineteen million, nine hundred eighteen thousand, ninety-five".