3429521613 has 30 divisors (see below), whose sum is σ = 5959545966. Its totient is φ = 1959724368.

The previous prime is 3429521611. The next prime is 3429521617. The reversal of 3429521613 is 3161259243.

3429521613 is a `hidden beast` number, since 3 + 429 + 5 + 216 + 13 = 666.

3429521613 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2874353769 + 555167844 = 53613^2 + 23562^2 .

It is not a de Polignac number, because 3429521613 - 2¹ = 3429521611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3429521611) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 428070 + ... + 436007.

Almost surely, 2^3429521613 is an apocalyptic number.

It is an amenable number.

3429521613 is a deficient number, since it is larger than the sum of its proper divisors (2530024353).

3429521613 is an equidigital number, since it uses as much as digits as its factorization.

3429521613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864103 (or 864087 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3429521613 is about 58562.1175590501. The cubic root of 3429521613 is about 1508.0341672762.

The spelling of 3429521613 in words is "three billion, four hundred twenty-nine million, five hundred twenty-one thousand, six hundred thirteen".