15494772484 has 27 divisors (see below), whose sum is σ = 27414915381. Its totient is φ = 7662865680.

The previous prime is 15494772409. The next prime is 15494772499. The reversal of 15494772484 is 48427749451.

The square root of 15494772484 is 124478.

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., 10799782084 + 4694990400 = 103922^2 + 68520^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27135919 + ... + 27136489.

Almost surely, 2^15494772484 is an apocalyptic number.

15494772484 is the 124478-th square number.

It is an amenable number.

15494772484 is a deficient number, since it is larger than the sum of its proper divisors (11920142897).

15494772484 is an frugal number, since it uses more digits than its factorization.

15494772484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 682 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 55.

The spelling of 15494772484 in words is "fifteen billion, four hundred ninety-four million, seven hundred seventy-two thousand, four hundred eighty-four".