1864224999 has 48 divisors (see below), whose sum is σ = 3340460032. Its totient is φ = 975530304.

The previous prime is 1864224979. The next prime is 1864225001. The reversal of 1864224999 is 9994224681.

It is not a de Polignac number, because 1864224999 - 2²¹ = 1862127847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864224949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95052 + ... + 112974.

Almost surely, 2^1864224999 is an apocalyptic number.

1864224999 is a deficient number, since it is larger than the sum of its proper divisors (1476235033).

1864224999 is a wasteful number, since it uses less digits than its factorization.

1864224999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18076 (or 18073 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 1864224999 is about 43176.6719305692. The cubic root of 1864224999 is about 1230.7394146225.

The spelling of 1864224999 in words is "one billion, eight hundred sixty-four million, two hundred twenty-four thousand, nine hundred ninety-nine".