1002444438 has 16 divisors (see below), whose sum is σ = 2042717616. Its totient is φ = 327843360.

The previous prime is 1002444437. The next prime is 1002444439. The reversal of 1002444438 is 8344442001.

It is an interprime number because it is at equal distance from previous prime (1002444437) and next prime (1002444439).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002444433) 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, 1575853 + ... + 1576488.

It is an arithmetic number, because the mean of its divisors is an integer number (127669851).

Almost surely, 2^1002444438 is an apocalyptic number.

1002444438 is an abundant number, since it is smaller than the sum of its proper divisors (1040273178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002444438 is a wasteful number, since it uses less digits than its factorization.

1002444438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152399.

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 1002444438 is about 31661.4029695464. The cubic root of 1002444438 is about 1000.8141496471.

Adding to 1002444438 its reverse (8344442001), we get a palindrome (9346886439).

The spelling of 1002444438 in words is "one billion, two million, four hundred forty-four thousand, four hundred thirty-eight".