1818199383 has 64 divisors (see below), whose sum is σ = 3360129024. Its totient is φ = 843696000.

The previous prime is 1818199373. The next prime is 1818199387. The reversal of 1818199383 is 3839918181.

It is not a de Polignac number, because 1818199383 - 2⁸ = 1818199127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818199387) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83328 + ... + 102858.

It is an arithmetic number, because the mean of its divisors is an integer number (52502016).

Almost surely, 2^1818199383 is an apocalyptic number.

1818199383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1818199383 is a deficient number, since it is larger than the sum of its proper divisors (1541929641).

1818199383 is a wasteful number, since it uses less digits than its factorization.

1818199383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19596.

The product of its digits is 373248, while the sum is 51.

The square root of 1818199383 is about 42640.3492363747. The cubic root of 1818199383 is about 1220.5263748043.

The spelling of 1818199383 in words is "one billion, eight hundred eighteen million, one hundred ninety-nine thousand, three hundred eighty-three".