3521992380 has 96 divisors (see below), whose sum is σ = 10550991360. Its totient is φ = 875162880.

The previous prime is 3521992349. The next prime is 3521992387. The reversal of 3521992380 is 832991253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521992387) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 44217 + ... + 94863.

It is an arithmetic number, because the mean of its divisors is an integer number (109906160).

Almost surely, 2^3521992380 is an apocalyptic number.

3521992380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521992380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5275495680).

3521992380 is an abundant number, since it is smaller than the sum of its proper divisors (7028998980).

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

3521992380 is a wasteful number, since it uses less digits than its factorization.

3521992380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50739 (or 50737 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 3521992380 is about 59346.3763004954. The cubic root of 3521992380 is about 1521.4679349605.

The spelling of 3521992380 in words is "three billion, five hundred twenty-one million, nine hundred ninety-two thousand, three hundred eighty".