1544961636 has 27 divisors (see below), whose sum is σ = 3905915923. Its totient is φ = 514908600.

The previous prime is 1544961599. The next prime is 1544961637. The reversal of 1544961636 is 6361694451.

The square root of 1544961636 is 39306.

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

1544961636 is a `hidden beast` number, since 1 + 5 + 4 + 4 + 9 + 6 + 1 + 636 = 666.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1544961591 and 1544961600.

It is not an unprimeable number, because it can be changed into a prime (1544961637) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 232561 + ... + 239111.

Almost surely, 2^1544961636 is an apocalyptic number.

1544961636 is the 39306-th square number.

It is an amenable number.

1544961636 is an abundant number, since it is smaller than the sum of its proper divisors (2360954287).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1544961636 is an frugal number, since it uses more digits than its factorization.

1544961636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13112 (or 6556 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The cubic root of 1544961636 is about 1156.0392153537.

The spelling of 1544961636 in words is "one billion, five hundred forty-four million, nine hundred sixty-one thousand, six hundred thirty-six".