1002251444 has 12 divisors (see below), whose sum is σ = 1846252800. Its totient is φ = 474750648.

The previous prime is 1002251429. The next prime is 1002251461. The reversal of 1002251444 is 4441522001.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6593684 + ... + 6593835.

It is an arithmetic number, because the mean of its divisors is an integer number (153854400).

Almost surely, 2^1002251444 is an apocalyptic number.

It is an amenable number.

1002251444 is a deficient number, since it is larger than the sum of its proper divisors (844001356).

1002251444 is a wasteful number, since it uses less digits than its factorization.

1002251444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13187542 (or 13187540 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1002251444 is about 31658.3550425476. The cubic root of 1002251444 is about 1000.7499188145.

Adding to 1002251444 its reverse (4441522001), we get a palindrome (5443773445).

It can be divided in two parts, 1002251 and 444, that multiplied together give a palindrome (444999444).

The spelling of 1002251444 in words is "one billion, two million, two hundred fifty-one thousand, four hundred forty-four".