1491063713 has 2 divisors, whose sum is σ = 1491063714. Its totient is φ = 1491063712.

The previous prime is 1491063689. The next prime is 1491063731. The reversal of 1491063713 is 3173601941.

It is a happy number.

Together with next prime (1491063731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1177313344 + 313750369 = 34312^2 + 17713^2 .

It is a cyclic number.

It is not a de Polignac number, because 1491063713 - 2²⁶ = 1423954849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1491063773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745531856 + 745531857.

It is an arithmetic number, because the mean of its divisors is an integer number (745531857).

Almost surely, 2^1491063713 is an apocalyptic number.

It is an amenable number.

1491063713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491063713 is an equidigital number, since it uses as much as digits as its factorization.

1491063713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1491063713 is about 38614.2941538493. The cubic root of 1491063713 is about 1142.4364921837.

The spelling of 1491063713 in words is "one billion, four hundred ninety-one million, sixty-three thousand, seven hundred thirteen".