3597572394 has 60 divisors (see below), whose sum is σ = 8687968674. Its totient is φ = 1106098416.

The previous prime is 3597572383. The next prime is 3597572399. The reversal of 3597572394 is 4932757953.

3597572394 is a `hidden beast` number, since 35 + 9 + 7 + 572 + 39 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3459204225 + 138368169 = 58815^2 + 11763^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 3597572394.

It is not an unprimeable number, because it can be changed into a prime (3597572399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2751889 + ... + 2753195.

Almost surely, 2^3597572394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3597572394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4343984337).

3597572394 is an abundant number, since it is smaller than the sum of its proper divisors (5090396280).

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

3597572394 is an equidigital number, since it uses as much as digits as its factorization.

3597572394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641 (or 1325 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 54.

The square root of 3597572394 is about 59979.7665383919. The cubic root of 3597572394 is about 1532.2742878080.

The spelling of 3597572394 in words is "three billion, five hundred ninety-seven million, five hundred seventy-two thousand, three hundred ninety-four".