1864634968 has 16 divisors (see below), whose sum is σ = 3995646480. Its totient is φ = 799129248.

The previous prime is 1864634957. The next prime is 1864634971. The reversal of 1864634968 is 8694364681.

It is a super-2 number, since 2×1864634968² = 6953727127776722048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16648471 + ... + 16648582.

It is an arithmetic number, because the mean of its divisors is an integer number (249727905).

Almost surely, 2^1864634968 is an apocalyptic number.

It is an amenable number.

1864634968 is an abundant number, since it is smaller than the sum of its proper divisors (2131011512).

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

1864634968 is a wasteful number, since it uses less digits than its factorization.

1864634968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33297066 (or 33297062 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The square root of 1864634968 is about 43181.4192448558. The cubic root of 1864634968 is about 1230.8296269136.

The spelling of 1864634968 in words is "one billion, eight hundred sixty-four million, six hundred thirty-four thousand, nine hundred sixty-eight".