100009019 has 4 divisors (see below), whose sum is σ = 109100760. Its totient is φ = 90917280.

The previous prime is 100009009. The next prime is 100009043. The reversal of 100009019 is 910900001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100009019 - 2⁸ = 100008763 is a prime.

It is a super-2 number, since 2×100009019² = 20003607762684722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100009009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545854 + ... + 4545875.

It is an arithmetic number, because the mean of its divisors is an integer number (27275190).

Almost surely, 2^100009019 is an apocalyptic number.

100009019 is a deficient number, since it is larger than the sum of its proper divisors (9091741).

100009019 is an equidigital number, since it uses as much as digits as its factorization.

100009019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091740.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 100009019 is about 10000.4509398327. The cubic root of 100009019 is about 464.1728371050.

The spelling of 100009019 in words is "one hundred million, nine thousand, nineteen".