2027777749 has 2 divisors, whose sum is σ = 2027777750. Its totient is φ = 2027777748.

The previous prime is 2027777747. The next prime is 2027777777. The reversal of 2027777749 is 9477777202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1413233649 + 614544100 = 37593^2 + 24790^2 .

It is a cyclic number.

It is not a de Polignac number, because 2027777749 - 2¹ = 2027777747 is a prime.

It is a super-2 number, since 2×2027777749² = 8223765198679014002, which contains 22 as substring.

Together with 2027777747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2027777696 and 2027777705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2027777747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013888874 + 1013888875.

It is an arithmetic number, because the mean of its divisors is an integer number (1013888875).

Almost surely, 2^2027777749 is an apocalyptic number.

It is an amenable number.

2027777749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2027777749 is an equidigital number, since it uses as much as digits as its factorization.

2027777749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2420208, while the sum is 52.

The square root of 2027777749 is about 45030.8533008203. The cubic root of 2027777749 is about 1265.7272137082.

The spelling of 2027777749 in words is "two billion, twenty-seven million, seven hundred seventy-seven thousand, seven hundred forty-nine".