1002194819 has 2 divisors, whose sum is σ = 1002194820. Its totient is φ = 1002194818.

The previous prime is 1002194797. The next prime is 1002194873. The reversal of 1002194819 is 9184912001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002194819 - 2⁸ = 1002194563 is a prime.

It is a super-2 number, since 2×1002194819² = 2008788910460885522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002194419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501097409 + 501097410.

It is an arithmetic number, because the mean of its divisors is an integer number (501097410).

Almost surely, 2^1002194819 is an apocalyptic number.

1002194819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002194819 is an equidigital number, since it uses as much as digits as its factorization.

1002194819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1002194819 is about 31657.4607162356. The cubic root of 1002194819 is about 1000.7310717372.

The spelling of 1002194819 in words is "one billion, two million, one hundred ninety-four thousand, eight hundred nineteen".