1491541567 has 8 divisors (see below), whose sum is σ = 1511248640. Its totient is φ = 1471855320.

The previous prime is 1491541531. The next prime is 1491541577. The reversal of 1491541567 is 7651451941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1491541567 - 2²³ = 1483152959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491541507) 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 in 7 ways as a sum of consecutive naturals, for example, 183328 + ... + 191290.

It is an arithmetic number, because the mean of its divisors is an integer number (188906080).

Almost surely, 2^1491541567 is an apocalyptic number.

1491541567 is a deficient number, since it is larger than the sum of its proper divisors (19707073).

1491541567 is an equidigital number, since it uses as much as digits as its factorization.

1491541567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10413.

The product of its digits is 151200, while the sum is 43.

The square root of 1491541567 is about 38620.4811855057. The cubic root of 1491541567 is about 1142.5585212950.

The spelling of 1491541567 in words is "one billion, four hundred ninety-one million, five hundred forty-one thousand, five hundred sixty-seven".