1918882020 has 96 divisors (see below), whose sum is σ = 6050451456. Its totient is φ = 450172800.

The previous prime is 1918882003. The next prime is 1918882027. The reversal of 1918882020 is 202888191.

It is a self number, because there is not a number n which added to its sum of digits gives 1918882020.

It is not an unprimeable number, because it can be changed into a prime (1918882027) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 26434 + ... + 67353.

It is an arithmetic number, because the mean of its divisors is an integer number (63025536).

Almost surely, 2^1918882020 is an apocalyptic number.

1918882020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1918882020 is an abundant number, since it is smaller than the sum of its proper divisors (4131569436).

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

1918882020 is a wasteful number, since it uses less digits than its factorization.

1918882020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93841 (or 93839 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 1918882020 is about 43805.0455997936. The cubic root of 1918882020 is about 1242.6517177800.

The spelling of 1918882020 in words is "one billion, nine hundred eighteen million, eight hundred eighty-two thousand, twenty".