1008631964 has 36 divisors (see below), whose sum is σ = 1901607120. Its totient is φ = 467927040.

The previous prime is 1008631961. The next prime is 1008631973. The reversal of 1008631964 is 4691368001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008631961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75932 + ... + 88220.

It is an arithmetic number, because the mean of its divisors is an integer number (52822420).

Almost surely, 2^1008631964 is an apocalyptic number.

It is an amenable number.

1008631964 is a deficient number, since it is larger than the sum of its proper divisors (892975156).

1008631964 is a wasteful number, since it uses less digits than its factorization.

1008631964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12398 (or 12379 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1008631964 is about 31758.9666708475. The cubic root of 1008631964 is about 1002.8690818304.

Adding to 1008631964 its reverse (4691368001), we get a palindrome (5699999965).

The spelling of 1008631964 in words is "one billion, eight million, six hundred thirty-one thousand, nine hundred sixty-four".