1077946861 has 2 divisors, whose sum is σ = 1077946862. Its totient is φ = 1077946860.

The previous prime is 1077946823. The next prime is 1077946951. The reversal of 1077946861 is 1686497701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 956726761 + 121220100 = 30931^2 + 11010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1077946861 - 2²⁷ = 943729133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1077946561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538973430 + 538973431.

It is an arithmetic number, because the mean of its divisors is an integer number (538973431).

Almost surely, 2^1077946861 is an apocalyptic number.

It is an amenable number.

1077946861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1077946861 is an equidigital number, since it uses as much as digits as its factorization.

1077946861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 1077946861 is about 32832.1010750150. The cubic root of 1077946861 is about 1025.3350040412.

The spelling of 1077946861 in words is "one billion, seventy-seven million, nine hundred forty-six thousand, eight hundred sixty-one".