3499365781 has 2 divisors, whose sum is σ = 3499365782. Its totient is φ = 3499365780.

The previous prime is 3499365773. The next prime is 3499365809. The reversal of 3499365781 is 1875639943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2741464881 + 757900900 = 52359^2 + 27530^2 .

It is an emirp because it is prime and its reverse (1875639943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3499365781 - 2³ = 3499365773 is a prime.

It is a super-2 number, since 2×3499365781² = 24491121738467479922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3499362781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749682890 + 1749682891.

It is an arithmetic number, because the mean of its divisors is an integer number (1749682891).

Almost surely, 2^3499365781 is an apocalyptic number.

It is an amenable number.

3499365781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3499365781 is an equidigital number, since it uses as much as digits as its factorization.

3499365781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 55.

The square root of 3499365781 is about 59155.4374592902. The cubic root of 3499365781 is about 1518.2027726636.

The spelling of 3499365781 in words is "three billion, four hundred ninety-nine million, three hundred sixty-five thousand, seven hundred eighty-one".