1720883011 has 2 divisors, whose sum is σ = 1720883012. Its totient is φ = 1720883010.

The previous prime is 1720883009. The next prime is 1720883027. The reversal of 1720883011 is 1103880271.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1720883011 - 2¹ = 1720883009 is a prime.

It is a super-2 number, since 2×1720883011² = 5922876675096852242, which contains 22 as substring.

Together with 1720883009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1720883081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860441505 + 860441506.

It is an arithmetic number, because the mean of its divisors is an integer number (860441506).

Almost surely, 2^1720883011 is an apocalyptic number.

1720883011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720883011 is an equidigital number, since it uses as much as digits as its factorization.

1720883011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 1720883011 is about 41483.5269836112. The cubic root of 1720883011 is about 1198.3502819071.

The spelling of 1720883011 in words is "one billion, seven hundred twenty million, eight hundred eighty-three thousand, eleven".