1545343145 has 4 divisors (see below), whose sum is σ = 1854411780. Its totient is φ = 1236274512.

The previous prime is 1545343123. The next prime is 1545343153. The reversal of 1545343145 is 5413435451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 412414864 + 1132928281 = 20308^2 + 33659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1545343145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154534310 + ... + 154534319.

It is an arithmetic number, because the mean of its divisors is an integer number (463602945).

Almost surely, 2^1545343145 is an apocalyptic number.

It is an amenable number.

1545343145 is a deficient number, since it is larger than the sum of its proper divisors (309068635).

1545343145 is an equidigital number, since it uses as much as digits as its factorization.

1545343145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309068634.

The product of its digits is 72000, while the sum is 35.

The square root of 1545343145 is about 39310.8527635817. The cubic root of 1545343145 is about 1156.1343640091.

Adding to 1545343145 its reverse (5413435451), we get a palindrome (6958778596).

The spelling of 1545343145 in words is "one billion, five hundred forty-five million, three hundred forty-three thousand, one hundred forty-five".