1492648561 has 8 divisors (see below), whose sum is σ = 1539578664. Its totient is φ = 1446065280.

The previous prime is 1492648529. The next prime is 1492648613. The reversal of 1492648561 is 1658462941.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 593848161 + 898800400 = 24369^2 + 29980^2 .

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 1492648561 - 2⁵ = 1492648529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1492648061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77950 + ... + 95191.

It is an arithmetic number, because the mean of its divisors is an integer number (192447333).

Almost surely, 2^1492648561 is an apocalyptic number.

It is an amenable number.

1492648561 is a deficient number, since it is larger than the sum of its proper divisors (46930103).

1492648561 is a wasteful number, since it uses less digits than its factorization.

1492648561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173411.

The product of its digits is 414720, while the sum is 46.

The square root of 1492648561 is about 38634.8102234242. The cubic root of 1492648561 is about 1142.8411131851.

The spelling of 1492648561 in words is "one billion, four hundred ninety-two million, six hundred forty-eight thousand, five hundred sixty-one".