2991402473 has 2 divisors, whose sum is σ = 2991402474. Its totient is φ = 2991402472.

The previous prime is 2991402451. The next prime is 2991402481. The reversal of 2991402473 is 3742041992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2436705769 + 554696704 = 49363^2 + 23552^2 .

It is a cyclic number.

It is not a de Polignac number, because 2991402473 - 2⁶ = 2991402409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2991402473.

It is not a weakly prime, because it can be changed into another prime (2991402413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495701236 + 1495701237.

It is an arithmetic number, because the mean of its divisors is an integer number (1495701237).

Almost surely, 2^2991402473 is an apocalyptic number.

It is an amenable number.

2991402473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991402473 is an equidigital number, since it uses as much as digits as its factorization.

2991402473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 2991402473 is about 54693.7151142615. The cubic root of 2991402473 is about 1440.8704987754.

The spelling of 2991402473 in words is "two billion, nine hundred ninety-one million, four hundred two thousand, four hundred seventy-three".