4011817840 has 20 divisors (see below), whose sum is σ = 9327476664. Its totient is φ = 1604727104.

The previous prime is 4011817837. The next prime is 4011817841. The reversal of 4011817840 is 487181104.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 4011817796 and 4011817805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4011817841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25073782 + ... + 25073941.

Almost surely, 2^4011817840 is an apocalyptic number.

4011817840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4011817840 is an abundant number, since it is smaller than the sum of its proper divisors (5315658824).

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

4011817840 is a wasteful number, since it uses less digits than its factorization.

4011817840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50147736 (or 50147730 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 4011817840 is about 63338.9125261872. The cubic root of 4011817840 is about 1588.9628192209.

Adding to 4011817840 its reverse (487181104), we get a palindrome (4498998944).

The spelling of 4011817840 in words is "four billion, eleven million, eight hundred seventeen thousand, eight hundred forty".