1491349924 has 9 divisors (see below), whose sum is σ = 2609997537. Its totient is φ = 745636344.

The previous prime is 1491349921. The next prime is 1491349943. The reversal of 1491349924 is 4299431941.

The square root of 1491349924 is 38618.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 203975524 + 1287374400 = 14282^2 + 35880^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1491349921) 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 2 ways as a sum of consecutive naturals, for example, 67582 + ... + 86890.

Almost surely, 2^1491349924 is an apocalyptic number.

1491349924 is the 38618-th square number.

It is an amenable number.

1491349924 is a deficient number, since it is larger than the sum of its proper divisors (1118647613).

1491349924 is an frugal number, since it uses more digits than its factorization.

1491349924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38622 (or 19311 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The cubic root of 1491349924 is about 1142.5095847392.

The spelling of 1491349924 in words is "one billion, four hundred ninety-one million, three hundred forty-nine thousand, nine hundred twenty-four".