3506421594 has 64 divisors (see below), whose sum is σ = 7943298048. Its totient is φ = 1024358400.

The previous prime is 3506421593. The next prime is 3506421601. The reversal of 3506421594 is 4951246053.

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

It is not an unprimeable number, because it can be changed into a prime (3506421593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114474 + ... + 141834.

It is an arithmetic number, because the mean of its divisors is an integer number (124114032).

Almost surely, 2^3506421594 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3506421594, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3971649024).

3506421594 is an abundant number, since it is smaller than the sum of its proper divisors (4436876454).

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

3506421594 is a wasteful number, since it uses less digits than its factorization.

3506421594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27463.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 3506421594 is about 59215.0453347796. The cubic root of 3506421594 is about 1519.2224777475. Note that the first 3 decimals are identical.

The spelling of 3506421594 in words is "three billion, five hundred six million, four hundred twenty-one thousand, five hundred ninety-four".