1540561612 has 12 divisors (see below), whose sum is σ = 2704766680. Its totient is φ = 767771136.

The previous prime is 1540561579. The next prime is 1540561613. The reversal of 1540561612 is 2161650451.

It is not an unprimeable number, because it can be changed into a prime (1540561613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626037 + ... + 628492.

Almost surely, 2^1540561612 is an apocalyptic number.

It is an amenable number.

1540561612 is a deficient number, since it is larger than the sum of its proper divisors (1164205068).

1540561612 is a wasteful number, since it uses less digits than its factorization.

1540561612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254840 (or 1254838 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1540561612 is about 39249.9886878965. The cubic root of 1540561612 is about 1154.9407119608.

The spelling of 1540561612 in words is "one billion, five hundred forty million, five hundred sixty-one thousand, six hundred twelve".