3181740673 has 4 divisors (see below), whose sum is σ = 3320077248. Its totient is φ = 3043404100.

The previous prime is 3181740649. The next prime is 3181740677. The reversal of 3181740673 is 3760471813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3760471813 = 7 ⋅537210259.

It is a cyclic number.

It is not a de Polignac number, because 3181740673 - 2⁹ = 3181740161 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3181740677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69168253 + ... + 69168298.

It is an arithmetic number, because the mean of its divisors is an integer number (830019312).

Almost surely, 2^3181740673 is an apocalyptic number.

It is an amenable number.

3181740673 is a deficient number, since it is larger than the sum of its proper divisors (138336575).

3181740673 is a wasteful number, since it uses less digits than its factorization.

3181740673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138336574.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 3181740673 is about 56406.9204353508. The cubic root of 3181740673 is about 1470.8044208123.

The spelling of 3181740673 in words is "three billion, one hundred eighty-one million, seven hundred forty thousand, six hundred seventy-three".