2047461491 has 2 divisors, whose sum is σ = 2047461492. Its totient is φ = 2047461490.

The previous prime is 2047461463. The next prime is 2047461539. The reversal of 2047461491 is 1941647402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2047461491 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2047461421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023730745 + 1023730746.

It is an arithmetic number, because the mean of its divisors is an integer number (1023730746).

Almost surely, 2^2047461491 is an apocalyptic number.

2047461491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047461491 is an equidigital number, since it uses as much as digits as its factorization.

2047461491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 2047461491 is about 45248.8838646878. The cubic root of 2047461491 is about 1269.8095258600.

The spelling of 2047461491 in words is "two billion, forty-seven million, four hundred sixty-one thousand, four hundred ninety-one".