1868747741 has 6 divisors (see below), whose sum is σ = 2173849470. Its totient is φ = 1601783736.

The previous prime is 1868747731. The next prime is 1868747747. The reversal of 1868747741 is 1477478681.

It can be written as a sum of positive squares in only one way, i.e., 1494131716 + 374616025 = 38654^2 + 19355^2 .

It is not a de Polignac number, because 1868747741 - 2¹⁰ = 1868746717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868747747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19068806 + ... + 19068903.

It is an arithmetic number, because the mean of its divisors is an integer number (362308245).

Almost surely, 2^1868747741 is an apocalyptic number.

It is an amenable number.

1868747741 is a deficient number, since it is larger than the sum of its proper divisors (305101729).

1868747741 is an equidigital number, since it uses as much as digits as its factorization.

1868747741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38137723 (or 38137716 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 53.

The square root of 1868747741 is about 43229.0150361999. The cubic root of 1868747741 is about 1231.7338978484.

The spelling of 1868747741 in words is "one billion, eight hundred sixty-eight million, seven hundred forty-seven thousand, seven hundred forty-one".