10019805 has 8 divisors (see below), whose sum is σ = 16031712. Its totient is φ = 5343888.

The previous prime is 10019791. The next prime is 10019813. The reversal of 10019805 is 50891001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10019805 - 2⁶ = 10019741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333979 + ... + 334008.

It is an arithmetic number, because the mean of its divisors is an integer number (2003964).

Almost surely, 2^10019805 is an apocalyptic number.

10019805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10019805 is a deficient number, since it is larger than the sum of its proper divisors (6011907).

10019805 is an equidigital number, since it uses as much as digits as its factorization.

10019805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667995.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 10019805 is about 3165.4075566979. The cubic root of 10019805 is about 215.5856038086.

The spelling of 10019805 in words is "ten million, nineteen thousand, eight hundred five".