1061581823 has 2 divisors, whose sum is σ = 1061581824. Its totient is φ = 1061581822.

The previous prime is 1061581817. The next prime is 1061581861. The reversal of 1061581823 is 3281851601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1061581823 - 2²² = 1057387519 is a prime.

It is a super-2 number, since 2×1061581823² = 2253911933848006658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061581883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530790911 + 530790912.

It is an arithmetic number, because the mean of its divisors is an integer number (530790912).

Almost surely, 2^1061581823 is an apocalyptic number.

1061581823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061581823 is an equidigital number, since it uses as much as digits as its factorization.

1061581823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1061581823 is about 32581.9247896744. The cubic root of 1061581823 is about 1020.1197549385.

The spelling of 1061581823 in words is "one billion, sixty-one million, five hundred eighty-one thousand, eight hundred twenty-three".