1545000813 has 6 divisors (see below), whose sum is σ = 2231667854. Its totient is φ = 1030000536.

The previous prime is 1545000811. The next prime is 1545000829. The reversal of 1545000813 is 3180005451.

1545000813 is a `hidden beast` number, since 154 + 500 + 0 + 8 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 890306244 + 654694569 = 29838^2 + 25587^2 .

It is not a de Polignac number, because 1545000813 - 2¹ = 1545000811 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545000811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85833370 + ... + 85833387.

Almost surely, 2^1545000813 is an apocalyptic number.

It is an amenable number.

1545000813 is a deficient number, since it is larger than the sum of its proper divisors (686667041).

1545000813 is a wasteful number, since it uses less digits than its factorization.

1545000813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171666763 (or 171666760 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1545000813 is about 39306.4983558699. The cubic root of 1545000813 is about 1156.0489868510.

The spelling of 1545000813 in words is "one billion, five hundred forty-five million, eight hundred thirteen", and thus it is an aban number.