1246994641 has 2 divisors, whose sum is σ = 1246994642. Its totient is φ = 1246994640.

The previous prime is 1246994627. The next prime is 1246994713. The reversal of 1246994641 is 1464996421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1232010000 + 14984641 = 35100^2 + 3871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1246994641 - 2¹³ = 1246986449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1246994591 and 1246994600.

It is not a weakly prime, because it can be changed into another prime (1246995641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623497320 + 623497321.

It is an arithmetic number, because the mean of its divisors is an integer number (623497321).

Almost surely, 2^1246994641 is an apocalyptic number.

It is an amenable number.

1246994641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1246994641 is an equidigital number, since it uses as much as digits as its factorization.

1246994641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 46.

The square root of 1246994641 is about 35312.8112871235. The cubic root of 1246994641 is about 1076.3533389145.

The spelling of 1246994641 in words is "one billion, two hundred forty-six million, nine hundred ninety-four thousand, six hundred forty-one".