1082047861 has 2 divisors, whose sum is σ = 1082047862. Its totient is φ = 1082047860.

The previous prime is 1082047859. The next prime is 1082047907. The reversal of 1082047861 is 1687402801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 913852900 + 168194961 = 30230^2 + 12969^2 .

It is a cyclic number.

It is not a de Polignac number, because 1082047861 - 2¹ = 1082047859 is a prime.

Together with 1082047859, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1082047861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1082047801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541023930 + 541023931.

It is an arithmetic number, because the mean of its divisors is an integer number (541023931).

Almost surely, 2^1082047861 is an apocalyptic number.

It is an amenable number.

1082047861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1082047861 is an equidigital number, since it uses as much as digits as its factorization.

1082047861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 1082047861 is about 32894.4959073703. The cubic root of 1082047861 is about 1026.6336387564.

The spelling of 1082047861 in words is "one billion, eighty-two million, forty-seven thousand, eight hundred sixty-one".