1297779052 has 6 divisors (see below), whose sum is σ = 2271113348. Its totient is φ = 648889524.

The previous prime is 1297779047. The next prime is 1297779073. The reversal of 1297779052 is 2509777921.

It is a junction number, because it is equal to n+sod(n) for n = 1297778987 and 1297779005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162222378 + ... + 162222385.

Almost surely, 2^1297779052 is an apocalyptic number.

It is an amenable number.

1297779052 is a deficient number, since it is larger than the sum of its proper divisors (973334296).

1297779052 is a wasteful number, since it uses less digits than its factorization.

1297779052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324444767 (or 324444765 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 49.

The square root of 1297779052 is about 36024.7005816842. The cubic root of 1297779052 is about 1090.7710090828.

It can be divided in two parts, 12977 and 79052, that added together give a palindrome (92029).

The spelling of 1297779052 in words is "one billion, two hundred ninety-seven million, seven hundred seventy-nine thousand, fifty-two".