3498791639 has 6 divisors (see below), whose sum is σ = 4070022984. Its totient is φ = 2998964220.

The previous prime is 3498791581. The next prime is 3498791663. The reversal of 3498791639 is 9361978943.

3498791639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3498791639 - 2²⁰ = 3497743063 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 (3498791039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35701907 + ... + 35702004.

It is an arithmetic number, because the mean of its divisors is an integer number (678337164).

Almost surely, 2^3498791639 is an apocalyptic number.

3498791639 is a deficient number, since it is larger than the sum of its proper divisors (571231345).

3498791639 is an equidigital number, since it uses as much as digits as its factorization.

3498791639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71403925 (or 71403918 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 59.

The square root of 3498791639 is about 59150.5844349826. The cubic root of 3498791639 is about 1518.1197374599.

The spelling of 3498791639 in words is "three billion, four hundred ninety-eight million, seven hundred ninety-one thousand, six hundred thirty-nine".