1491582945 has 8 divisors (see below), whose sum is σ = 2386532736. Its totient is φ = 795510896.

The previous prime is 1491582943. The next prime is 1491582947. The reversal of 1491582945 is 5492851941.

It is an interprime number because it is at equal distance from previous prime (1491582943) and next prime (1491582947).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1491582945 - 2¹ = 1491582943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1491582894 and 1491582903.

It is not an unprimeable number, because it can be changed into a prime (1491582943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49719417 + ... + 49719446.

It is an arithmetic number, because the mean of its divisors is an integer number (298316592).

Almost surely, 2^1491582945 is an apocalyptic number.

1491582945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1491582945 is a deficient number, since it is larger than the sum of its proper divisors (894949791).

1491582945 is an equidigital number, since it uses as much as digits as its factorization.

1491582945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99438871.

The product of its digits is 518400, while the sum is 48.

The square root of 1491582945 is about 38621.0168820035. The cubic root of 1491582945 is about 1142.5690867284.

The spelling of 1491582945 in words is "one billion, four hundred ninety-one million, five hundred eighty-two thousand, nine hundred forty-five".