1047748861 has 2 divisors, whose sum is σ = 1047748862. Its totient is φ = 1047748860.

The previous prime is 1047748829. The next prime is 1047748883. The reversal of 1047748861 is 1688477401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1023680025 + 24068836 = 31995^2 + 4906^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047748861 - 2⁵ = 1047748829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047778861) 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, 523874430 + 523874431.

It is an arithmetic number, because the mean of its divisors is an integer number (523874431).

Almost surely, 2^1047748861 is an apocalyptic number.

It is an amenable number.

1047748861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047748861 is an equidigital number, since it uses as much as digits as its factorization.

1047748861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 1047748861 is about 32368.9490252618. The cubic root of 1047748861 is about 1015.6694721872.

The spelling of 1047748861 in words is "one billion, forty-seven million, seven hundred forty-eight thousand, eight hundred sixty-one".