3491684537 has 6 divisors (see below), whose sum is σ = 3837967434. Its totient is φ = 3174258560.

The previous prime is 3491684513. The next prime is 3491684543. The reversal of 3491684537 is 7354861943.

It can be written as a sum of positive squares in only one way, i.e., 2150733376 + 1340951161 = 46376^2 + 36619^2 .

It is not a de Polignac number, because 3491684537 - 2¹² = 3491680441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3491684437) 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, 14428328 + ... + 14428569.

It is an arithmetic number, because the mean of its divisors is an integer number (639661239).

Almost surely, 2^3491684537 is an apocalyptic number.

It is an amenable number.

3491684537 is a deficient number, since it is larger than the sum of its proper divisors (346282897).

3491684537 is a wasteful number, since it uses less digits than its factorization.

3491684537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28856919 (or 28856908 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 3491684537 is about 59090.4775492634. The cubic root of 3491684537 is about 1517.0911208475.

The spelling of 3491684537 in words is "three billion, four hundred ninety-one million, six hundred eighty-four thousand, five hundred thirty-seven".