1491467387 has 2 divisors, whose sum is σ = 1491467388. Its totient is φ = 1491467386.

The previous prime is 1491467363. The next prime is 1491467401. The reversal of 1491467387 is 7837641941.

It is a strong prime.

It is an emirp because it is prime and its reverse (7837641941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1491467387 - 2⁶ = 1491467323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1491467287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745733693 + 745733694.

It is an arithmetic number, because the mean of its divisors is an integer number (745733694).

Almost surely, 2^1491467387 is an apocalyptic number.

1491467387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491467387 is an equidigital number, since it uses as much as digits as its factorization.

1491467387 is an evil number, because the sum of its binary digits is even.

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

The square root of 1491467387 is about 38619.5208023093. The cubic root of 1491467387 is about 1142.5395797297.

The spelling of 1491467387 in words is "one billion, four hundred ninety-one million, four hundred sixty-seven thousand, three hundred eighty-seven".