1491046063 has 4 divisors (see below), whose sum is σ = 1605741928. Its totient is φ = 1376350200.

The previous prime is 1491046009. The next prime is 1491046069. The reversal of 1491046063 is 3606401941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3606401941 = 157 ⋅22970713.

It is a cyclic number.

It is not a de Polignac number, because 1491046063 - 2¹⁷ = 1490914991 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 (1491046069) 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, 57347913 + ... + 57347938.

It is an arithmetic number, because the mean of its divisors is an integer number (401435482).

Almost surely, 2^1491046063 is an apocalyptic number.

1491046063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1491046063 is a deficient number, since it is larger than the sum of its proper divisors (114695865).

1491046063 is a wasteful number, since it uses less digits than its factorization.

1491046063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114695864.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1491046063 is about 38614.0656108626. The cubic root of 1491046063 is about 1142.4319844211.

The spelling of 1491046063 in words is "one billion, four hundred ninety-one million, forty-six thousand, sixty-three".