1822488491 has 2 divisors, whose sum is σ = 1822488492. Its totient is φ = 1822488490.

The previous prime is 1822488469. The next prime is 1822488523. The reversal of 1822488491 is 1948842281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1822488491 - 2⁶ = 1822488427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1822488401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911244245 + 911244246.

It is an arithmetic number, because the mean of its divisors is an integer number (911244246).

Almost surely, 2^1822488491 is an apocalyptic number.

1822488491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1822488491 is an equidigital number, since it uses as much as digits as its factorization.

1822488491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294912, while the sum is 47.

The square root of 1822488491 is about 42690.6136170470. The cubic root of 1822488491 is about 1221.4853562498.

The spelling of 1822488491 in words is "one billion, eight hundred twenty-two million, four hundred eighty-eight thousand, four hundred ninety-one".