2769561349 has 2 divisors, whose sum is σ = 2769561350. Its totient is φ = 2769561348.

The previous prime is 2769561343. The next prime is 2769561367. The reversal of 2769561349 is 9431659672.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1736388900 + 1033172449 = 41670^2 + 32143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2769561349 is a prime.

It is a super-4 number, since 4×2769561349⁴ (a number of 39 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2769561296 and 2769561305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2769561343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1384780674 + 1384780675.

It is an arithmetic number, because the mean of its divisors is an integer number (1384780675).

Almost surely, 2^2769561349 is an apocalyptic number.

It is an amenable number.

2769561349 is a deficient number, since it is larger than the sum of its proper divisors (1).

2769561349 is an equidigital number, since it uses as much as digits as its factorization.

2769561349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 52.

The square root of 2769561349 is about 52626.6220557619. The cubic root of 2769561349 is about 1404.3337391442. Note that the first 3 decimals are identical.

The spelling of 2769561349 in words is "two billion, seven hundred sixty-nine million, five hundred sixty-one thousand, three hundred forty-nine".