1826668640 has 24 divisors (see below), whose sum is σ = 4315505040. Its totient is φ = 730667392.

The previous prime is 1826668631. The next prime is 1826668643. The reversal of 1826668640 is 468666281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1826668643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5708180 + ... + 5708499.

It is an arithmetic number, because the mean of its divisors is an integer number (179812710).

Almost surely, 2^1826668640 is an apocalyptic number.

1826668640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1826668640 is an abundant number, since it is smaller than the sum of its proper divisors (2488836400).

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

1826668640 is a wasteful number, since it uses less digits than its factorization.

1826668640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11416694 (or 11416686 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 1826668640 is about 42739.5442184401. The cubic root of 1826668640 is about 1222.4185293990.

The spelling of 1826668640 in words is "one billion, eight hundred twenty-six million, six hundred sixty-eight thousand, six hundred forty".