19995007 has 16 divisors (see below), whose sum is σ = 21427200. Its totient is φ = 18627840.

The previous prime is 19994977. The next prime is 19995023. The reversal of 19995007 is 70059991.

It is a cyclic number.

It is not a de Polignac number, because 19995007 - 2⁷ = 19994879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19995037) 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, 157378 + ... + 157504.

It is an arithmetic number, because the mean of its divisors is an integer number (1339200).

Almost surely, 2^19995007 is an apocalyptic number.

19995007 is a deficient number, since it is larger than the sum of its proper divisors (1432193).

19995007 is a wasteful number, since it uses less digits than its factorization.

19995007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 19995007 is about 4471.5776857838. The cubic root of 19995007 is about 271.4191713009.

The spelling of 19995007 in words is "nineteen million, nine hundred ninety-five thousand, seven".