1540905904 has 20 divisors (see below), whose sum is σ = 3049028064. Its totient is φ = 754059968.

The previous prime is 1540905901. The next prime is 1540905917. The reversal of 1540905904 is 4095090451.

It is not an unprimeable number, because it can be changed into a prime (1540905901) 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, 1023787 + ... + 1025290.

Almost surely, 2^1540905904 is an apocalyptic number.

It is an amenable number.

1540905904 is a deficient number, since it is larger than the sum of its proper divisors (1508122160).

1540905904 is a wasteful number, since it uses less digits than its factorization.

1540905904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049132 (or 2049126 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1540905904 is about 39254.3743294935. The cubic root of 1540905904 is about 1155.0267427577.

The spelling of 1540905904 in words is "one billion, five hundred forty million, nine hundred five thousand, nine hundred four".