1864077688 has 64 divisors (see below), whose sum is σ = 4188153600. Its totient is φ = 767796480.

The previous prime is 1864077671. The next prime is 1864077697. The reversal of 1864077688 is 8867704681.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 14220 + ... + 62692.

It is an arithmetic number, because the mean of its divisors is an integer number (65439900).

Almost surely, 2^1864077688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1864077688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2094076800).

1864077688 is an abundant number, since it is smaller than the sum of its proper divisors (2324075912).

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

1864077688 is a wasteful number, since it uses less digits than its factorization.

1864077688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48532 (or 48528 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 55.

The square root of 1864077688 is about 43174.9659872477. The cubic root of 1864077688 is about 1230.7069961055.

The spelling of 1864077688 in words is "one billion, eight hundred sixty-four million, seventy-seven thousand, six hundred eighty-eight".