1004639871 has 16 divisors (see below), whose sum is σ = 1418979168. Its totient is φ = 630067200.

The previous prime is 1004639833. The next prime is 1004639879. The reversal of 1004639871 is 1789364001.

It is not a de Polignac number, because 1004639871 - 2¹³ = 1004631679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004639879) 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, 168481 + ... + 174341.

It is an arithmetic number, because the mean of its divisors is an integer number (88686198).

Almost surely, 2^1004639871 is an apocalyptic number.

1004639871 is a deficient number, since it is larger than the sum of its proper divisors (414339297).

1004639871 is a wasteful number, since it uses less digits than its factorization.

1004639871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1004639871 is about 31696.0545020985. The cubic root of 1004639871 is about 1001.5442377689.

The spelling of 1004639871 in words is "one billion, four million, six hundred thirty-nine thousand, eight hundred seventy-one".