2746143721 has 2 divisors, whose sum is σ = 2746143722. Its totient is φ = 2746143720.

The previous prime is 2746143713. The next prime is 2746143793. The reversal of 2746143721 is 1273416472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1976691600 + 769452121 = 44460^2 + 27739^2 .

It is a cyclic number.

It is not a de Polignac number, because 2746143721 - 2³ = 2746143713 is a prime.

It is not a weakly prime, because it can be changed into another prime (2746140721) 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, 1373071860 + 1373071861.

It is an arithmetic number, because the mean of its divisors is an integer number (1373071861).

Almost surely, 2^2746143721 is an apocalyptic number.

It is an amenable number.

2746143721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2746143721 is an equidigital number, since it uses as much as digits as its factorization.

2746143721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 2746143721 is about 52403.6613320100. The cubic root of 2746143721 is about 1400.3644835015.

The spelling of 2746143721 in words is "two billion, seven hundred forty-six million, one hundred forty-three thousand, seven hundred twenty-one".