1864140008 has 32 divisors (see below), whose sum is σ = 3684892800. Its totient is φ = 881653248.

The previous prime is 1864140001. The next prime is 1864140023. The reversal of 1864140008 is 8000414681.

It is not an unprimeable number, because it can be changed into a prime (1864140001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93185 + ... + 111407.

It is an arithmetic number, because the mean of its divisors is an integer number (115152900).

Almost surely, 2^1864140008 is an apocalyptic number.

It is an amenable number.

1864140008 is a deficient number, since it is larger than the sum of its proper divisors (1820752792).

1864140008 is a wasteful number, since it uses less digits than its factorization.

1864140008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18921 (or 18917 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1864140008 is about 43175.6876957391. The cubic root of 1864140008 is about 1230.7207109855.

Adding to 1864140008 its reverse (8000414681), we get a palindrome (9864554689).

The spelling of 1864140008 in words is "one billion, eight hundred sixty-four million, one hundred forty thousand, eight".