2361121729 has 2 divisors, whose sum is σ = 2361121730. Its totient is φ = 2361121728.

The previous prime is 2361121699. The next prime is 2361121733. The reversal of 2361121729 is 9271211632.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1660725504 + 700396225 = 40752^2 + 26465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2361121729 - 2¹⁷ = 2360990657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2361121694 and 2361121703.

It is not a weakly prime, because it can be changed into another prime (2361121759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1180560864 + 1180560865.

It is an arithmetic number, because the mean of its divisors is an integer number (1180560865).

Almost surely, 2^2361121729 is an apocalyptic number.

It is an amenable number.

2361121729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2361121729 is an equidigital number, since it uses as much as digits as its factorization.

2361121729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 2361121729 is about 48591.3750474300. The cubic root of 2361121729 is about 1331.5969527950.

The spelling of 2361121729 in words is "two billion, three hundred sixty-one million, one hundred twenty-one thousand, seven hundred twenty-nine".