1545139911 has 16 divisors (see below), whose sum is σ = 2492999424. Its totient is φ = 830999424.

The previous prime is 1545139909. The next prime is 1545139919. The reversal of 1545139911 is 1199315451.

It is not a de Polignac number, because 1545139911 - 2¹ = 1545139909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1545139911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545139919) 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 15 ways as a sum of consecutive naturals, for example, 2163705 + ... + 2164418.

It is an arithmetic number, because the mean of its divisors is an integer number (155812464).

Almost surely, 2^1545139911 is an apocalyptic number.

1545139911 is a deficient number, since it is larger than the sum of its proper divisors (947859513).

1545139911 is a wasteful number, since it uses less digits than its factorization.

1545139911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328150.

The product of its digits is 24300, while the sum is 39.

The square root of 1545139911 is about 39308.2677181277. The cubic root of 1545139911 is about 1156.0836792333.

The spelling of 1545139911 in words is "one billion, five hundred forty-five million, one hundred thirty-nine thousand, nine hundred eleven".