1005631630 has 16 divisors (see below), whose sum is σ = 1868529024. Its totient is φ = 389276640.

The previous prime is 1005631619. The next prime is 1005631633. The reversal of 1005631630 is 361365001.

It is a super-2 number, since 2×1005631630² = 2022589950512913800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1005631595 and 1005631604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005631633) 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 in 7 ways as a sum of consecutive naturals, for example, 1621677 + ... + 1622296.

It is an arithmetic number, because the mean of its divisors is an integer number (116783064).

Almost surely, 2^1005631630 is an apocalyptic number.

1005631630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1005631630 is a deficient number, since it is larger than the sum of its proper divisors (862897394).

1005631630 is a wasteful number, since it uses less digits than its factorization.

1005631630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244011.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1005631630 is about 31711.6954765903. The cubic root of 1005631630 is about 1001.8736970666.

Adding to 1005631630 its reverse (361365001), we get a palindrome (1366996631).

The spelling of 1005631630 in words is "one billion, five million, six hundred thirty-one thousand, six hundred thirty".