1111819640 has 32 divisors (see below), whose sum is σ = 2502630000. Its totient is φ = 444543744.

The previous prime is 1111819607. The next prime is 1111819649. The reversal of 1111819640 is 469181111.

It is a super-2 number, since 2×1111819640² = 2472285823779459200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111819597 and 1111819606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111819649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133931 + ... + 141989.

Almost surely, 2^1111819640 is an apocalyptic number.

1111819640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111819640 is an abundant number, since it is smaller than the sum of its proper divisors (1390810360).

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

1111819640 is a wasteful number, since it uses less digits than its factorization.

1111819640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11519 (or 11515 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 32.

The square root of 1111819640 is about 33343.9595729122. The cubic root of 1111819640 is about 1035.9642782712.

The spelling of 1111819640 in words is "one billion, one hundred eleven million, eight hundred nineteen thousand, six hundred forty".