1540345546 has 16 divisors (see below), whose sum is σ = 2408675328. Its totient is φ = 737946000.

The previous prime is 1540345531. The next prime is 1540345549. The reversal of 1540345546 is 6455430451.

It is not an unprimeable number, because it can be changed into a prime (1540345549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116730 + ... + 129253.

It is an arithmetic number, because the mean of its divisors is an integer number (150542208).

Almost surely, 2^1540345546 is an apocalyptic number.

1540345546 is a deficient number, since it is larger than the sum of its proper divisors (868329782).

1540345546 is a wasteful number, since it uses less digits than its factorization.

1540345546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246117.

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 1540345546 is about 39247.2361574672. The cubic root of 1540345546 is about 1154.8867153998.

Adding to 1540345546 its reverse (6455430451), we get a palindrome (7995775997).

The spelling of 1540345546 in words is "one billion, five hundred forty million, three hundred forty-five thousand, five hundred forty-six".