1491517367 has 2 divisors, whose sum is σ = 1491517368. Its totient is φ = 1491517366.

The previous prime is 1491517343. The next prime is 1491517369. The reversal of 1491517367 is 7637151941.

It is a strong prime.

It is an emirp because it is prime and its reverse (7637151941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1491517367 - 2²⁸ = 1223081911 is a prime.

It is a super-2 number, since 2×1491517367² = 4449248112125225378, which contains 22 as substring.

Together with 1491517369, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491517369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745758683 + 745758684.

It is an arithmetic number, because the mean of its divisors is an integer number (745758684).

Almost surely, 2^1491517367 is an apocalyptic number.

1491517367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491517367 is an equidigital number, since it uses as much as digits as its factorization.

1491517367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 1491517367 is about 38620.1678789723. The cubic root of 1491517367 is about 1142.5523419912.

The spelling of 1491517367 in words is "one billion, four hundred ninety-one million, five hundred seventeen thousand, three hundred sixty-seven".