1068144636 has 24 divisors (see below), whose sum is σ = 2684056144. Its totient is φ = 328659840.

The previous prime is 1068144611. The next prime is 1068144653. The reversal of 1068144636 is 6364418601.

It is a super-2 number, since 2×1068144636² = 2281865926831144992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 1068144594 and 1068144603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3423385 + ... + 3423696.

Almost surely, 2^1068144636 is an apocalyptic number.

It is an amenable number.

1068144636 is an abundant number, since it is smaller than the sum of its proper divisors (1615911508).

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

1068144636 is a wasteful number, since it uses less digits than its factorization.

1068144636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847101 (or 6847099 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 1068144636 is about 32682.4820966829. The cubic root of 1068144636 is about 1022.2176011676.

The spelling of 1068144636 in words is "one billion, sixty-eight million, one hundred forty-four thousand, six hundred thirty-six".