3598519021 has 4 divisors (see below), whose sum is σ = 3598739100. Its totient is φ = 3598298944.

The previous prime is 3598519007. The next prime is 3598519049. The reversal of 3598519021 is 1209158953.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2135456521 + 1463062500 = 46211^2 + 38250^2 .

It is a cyclic number.

It is not a de Polignac number, because 3598519021 - 2¹³ = 3598510829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3598519051) 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 3 ways as a sum of consecutive naturals, for example, 83356 + ... + 118933.

It is an arithmetic number, because the mean of its divisors is an integer number (899684775).

Almost surely, 2^3598519021 is an apocalyptic number.

It is an amenable number.

3598519021 is a deficient number, since it is larger than the sum of its proper divisors (220079).

3598519021 is a wasteful number, since it uses less digits than its factorization.

3598519021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220078.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 3598519021 is about 59987.6572388021. The cubic root of 3598519021 is about 1532.4086714840.

The spelling of 3598519021 in words is "three billion, five hundred ninety-eight million, five hundred nineteen thousand, twenty-one".