3581117436 has 72 divisors (see below), whose sum is σ = 9240908544. Its totient is φ = 1078409280.

The previous prime is 3581117401. The next prime is 3581117447. The reversal of 3581117436 is 6347111853.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 3581117394 and 3581117403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76531 + ... + 114101.

It is an arithmetic number, because the mean of its divisors is an integer number (128345952).

Almost surely, 2^3581117436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3581117436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4620454272).

3581117436 is an abundant number, since it is smaller than the sum of its proper divisors (5659791108).

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

3581117436 is a wasteful number, since it uses less digits than its factorization.

3581117436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37651 (or 37636 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 3581117436 is about 59842.4384195698. The cubic root of 3581117436 is about 1529.9345574128.

The spelling of 3581117436 in words is "three billion, five hundred eighty-one million, one hundred seventeen thousand, four hundred thirty-six".