1713072781 has 12 divisors (see below), whose sum is σ = 2003901120. Its totient is φ = 1460137560.

The previous prime is 1713072769. The next prime is 1713072791. The reversal of 1713072781 is 1872703171.

It is not a de Polignac number, because 1713072781 - 2⁵ = 1713072749 is a prime.

It is a super-2 number, since 2×1713072781² = 5869236706006147922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1713072781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1713072761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88885 + ... + 106426.

It is an arithmetic number, because the mean of its divisors is an integer number (166991760).

Almost surely, 2^1713072781 is an apocalyptic number.

It is an amenable number.

1713072781 is a deficient number, since it is larger than the sum of its proper divisors (290828339).

1713072781 is a wasteful number, since it uses less digits than its factorization.

1713072781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195504 (or 195497 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 1713072781 is about 41389.2834076648. The cubic root of 1713072781 is about 1196.5346275259.

The spelling of 1713072781 in words is "one billion, seven hundred thirteen million, seventy-two thousand, seven hundred eighty-one".