1491650543 has 2 divisors, whose sum is σ = 1491650544. Its totient is φ = 1491650542.

The previous prime is 1491650539. The next prime is 1491650569. The reversal of 1491650543 is 3450561941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1491650543 - 2² = 1491650539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1491650497 and 1491650506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491650143) 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, 745825271 + 745825272.

It is an arithmetic number, because the mean of its divisors is an integer number (745825272).

Almost surely, 2^1491650543 is an apocalyptic number.

1491650543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491650543 is an equidigital number, since it uses as much as digits as its factorization.

1491650543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1491650543 is about 38621.8920173520. The cubic root of 1491650543 is about 1142.5863467404.

The spelling of 1491650543 in words is "one billion, four hundred ninety-one million, six hundred fifty thousand, five hundred forty-three".