1545091818 has 64 divisors (see below), whose sum is σ = 3517655040. Its totient is φ = 449425152.

The previous prime is 1545091817. The next prime is 1545091819. The reversal of 1545091818 is 8181905451.

It is an interprime number because it is at equal distance from previous prime (1545091817) and next prime (1545091819).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1545091818.

It is not an unprimeable number, because it can be changed into a prime (1545091811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82605 + ... + 99567.

It is an arithmetic number, because the mean of its divisors is an integer number (54963360).

Almost surely, 2^1545091818 is an apocalyptic number.

1545091818 is an abundant number, since it is smaller than the sum of its proper divisors (1972563222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1545091818 is a wasteful number, since it uses less digits than its factorization.

1545091818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17051.

The product of its (nonzero) digits is 57600, while the sum is 42.

The square root of 1545091818 is about 39307.6559718333. The cubic root of 1545091818 is about 1156.0716846109.

The spelling of 1545091818 in words is "one billion, five hundred forty-five million, ninety-one thousand, eight hundred eighteen".