1491487367 has 4 divisors (see below), whose sum is σ = 1579221936. Its totient is φ = 1403752800.

The previous prime is 1491487357. The next prime is 1491487369. The reversal of 1491487367 is 7637841941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1491487367 - 2⁴ = 1491487351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491487369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43867259 + ... + 43867292.

It is an arithmetic number, because the mean of its divisors is an integer number (394805484).

Almost surely, 2^1491487367 is an apocalyptic number.

1491487367 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1491487367 is a deficient number, since it is larger than the sum of its proper divisors (87734569).

1491487367 is an equidigital number, since it uses as much as digits as its factorization.

1491487367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87734568.

The product of its digits is 1016064, while the sum is 50.

The square root of 1491487367 is about 38619.7794789147. The cubic root of 1491487367 is about 1142.5446816043.

The spelling of 1491487367 in words is "one billion, four hundred ninety-one million, four hundred eighty-seven thousand, three hundred sixty-seven".