1002004394 has 16 divisors (see below), whose sum is σ = 1519170432. Its totient is φ = 495624528.

The previous prime is 1002004391. The next prime is 1002004397. The reversal of 1002004394 is 4934002001.

It is an interprime number because it is at equal distance from previous prime (1002004391) and next prime (1002004397).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1002004391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266552 + ... + 270284.

It is an arithmetic number, because the mean of its divisors is an integer number (94948152).

Almost surely, 2^1002004394 is an apocalyptic number.

1002004394 is a deficient number, since it is larger than the sum of its proper divisors (517166038).

1002004394 is a wasteful number, since it uses less digits than its factorization.

1002004394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1002004394 is about 31654.4529884817. The cubic root of 1002004394 is about 1000.6676854303.

Adding to 1002004394 its reverse (4934002001), we get a palindrome (5936006395).

The spelling of 1002004394 in words is "one billion, two million, four thousand, three hundred ninety-four".