2974893723649 has 2 divisors, whose sum is σ = 2974893723650. Its totient is φ = 2974893723648.

The previous prime is 2974893723647. The next prime is 2974893723673. The reversal of 2974893723649 is 9463273984792.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1993724232049 + 981169491600 = 1411993^2 + 990540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2974893723649 - 2¹ = 2974893723647 is a prime.

Together with 2974893723647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2974893723647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1487446861824 + 1487446861825.

It is an arithmetic number, because the mean of its divisors is an integer number (1487446861825).

Almost surely, 2^{2974893723649} is an apocalyptic number.

It is an amenable number.

2974893723649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2974893723649 is an equidigital number, since it uses as much as digits as its factorization.

2974893723649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987614208, while the sum is 73.

The spelling of 2974893723649 in words is "two trillion, nine hundred seventy-four billion, eight hundred ninety-three million, seven hundred twenty-three thousand, six hundred forty-nine".