3521379690 has 64 divisors (see below), whose sum is σ = 9450270720. Its totient is φ = 933042240.

The previous prime is 3521379689. The next prime is 3521379707. The reversal of 3521379690 is 969731253.

3521379690 is a `hidden beast` number, since 3 + 521 + 37 + 9 + 6 + 90 = 666.

It is a super-2 number, since 2×3521379690² = 24800229842288992200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 855 + ... + 83925.

It is an arithmetic number, because the mean of its divisors is an integer number (147660480).

Almost surely, 2^3521379690 is an apocalyptic number.

3521379690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521379690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4725135360).

3521379690 is an abundant number, since it is smaller than the sum of its proper divisors (5928891030).

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

3521379690 is a wasteful number, since it uses less digits than its factorization.

3521379690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83244 (or 83238 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 3521379690 is about 59341.2140927366. The cubic root of 3521379690 is about 1521.3797043845.

The spelling of 3521379690 in words is "three billion, five hundred twenty-one million, three hundred seventy-nine thousand, six hundred ninety".