1811149996 has 54 divisors (see below), whose sum is σ = 3498346572. Its totient is φ = 820266480.

The previous prime is 1811149969. The next prime is 1811149997. The reversal of 1811149996 is 6999411181.

It is not an unprimeable number, because it can be changed into a prime (1811149997) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 762691 + ... + 765061.

Almost surely, 2^1811149996 is an apocalyptic number.

It is an amenable number.

1811149996 is a deficient number, since it is larger than the sum of its proper divisors (1687196576).

1811149996 is a wasteful number, since it uses less digits than its factorization.

1811149996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459 (or 2415 counting only the distinct ones).

The product of its digits is 139968, while the sum is 49.

The square root of 1811149996 is about 42557.6079684937. The cubic root of 1811149996 is about 1218.9469539039.

The spelling of 1811149996 in words is "one billion, eight hundred eleven million, one hundred forty-nine thousand, nine hundred ninety-six".