1911818046 has 16 divisors (see below), whose sum is σ = 3926978064. Its totient is φ = 620049024.

The previous prime is 1911818033. The next prime is 1911818047. The reversal of 1911818046 is 6408181191.

It is a super-2 number, since 2×1911818046² = 7310096482022516232, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1911817995 and 1911818013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1911818047) 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 7 ways as a sum of consecutive naturals, for example, 4305675 + ... + 4306118.

It is an arithmetic number, because the mean of its divisors is an integer number (245436129).

Almost surely, 2^1911818046 is an apocalyptic number.

1911818046 is an abundant number, since it is smaller than the sum of its proper divisors (2015160018).

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

1911818046 is a wasteful number, since it uses less digits than its factorization.

1911818046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8611835.

The product of its (nonzero) digits is 13824, while the sum is 39.

The square root of 1911818046 is about 43724.3415730872. The cubic root of 1911818046 is about 1241.1249862483.

The spelling of 1911818046 in words is "one billion, nine hundred eleven million, eight hundred eighteen thousand, forty-six".