1261477883 has 2 divisors, whose sum is σ = 1261477884. Its totient is φ = 1261477882.

The previous prime is 1261477859. The next prime is 1261477913. The reversal of 1261477883 is 3887741621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1261477883 - 2¹⁰ = 1261476859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1261477813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630738941 + 630738942.

It is an arithmetic number, because the mean of its divisors is an integer number (630738942).

Almost surely, 2^1261477883 is an apocalyptic number.

1261477883 is a deficient number, since it is larger than the sum of its proper divisors (1).

1261477883 is an equidigital number, since it uses as much as digits as its factorization.

1261477883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 47.

The square root of 1261477883 is about 35517.2899163210. The cubic root of 1261477883 is about 1080.5044177226.

The spelling of 1261477883 in words is "one billion, two hundred sixty-one million, four hundred seventy-seven thousand, eight hundred eighty-three".