1545840653 has 16 divisors (see below), whose sum is σ = 1787235840. Its totient is φ = 1309632000.

The previous prime is 1545840643. The next prime is 1545840661. The reversal of 1545840653 is 3560485451.

It is a cyclic number.

It is not a de Polignac number, because 1545840653 - 2¹⁰ = 1545839629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545840653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545840643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506813 + ... + 509853.

It is an arithmetic number, because the mean of its divisors is an integer number (111702240).

Almost surely, 2^1545840653 is an apocalyptic number.

It is an amenable number.

1545840653 is a deficient number, since it is larger than the sum of its proper divisors (241395187).

1545840653 is a wasteful number, since it uses less digits than its factorization.

1545840653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868.

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 1545840653 is about 39317.1801252328. The cubic root of 1545840653 is about 1156.2584193865.

The spelling of 1545840653 in words is "one billion, five hundred forty-five million, eight hundred forty thousand, six hundred fifty-three".