1545136667 has 4 divisors (see below), whose sum is σ = 1550635656. Its totient is φ = 1539637680.

The previous prime is 1545136661. The next prime is 1545136693. The reversal of 1545136667 is 7666315451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7666315451 = 151 ⋅50770301.

It is a cyclic number.

It is not a de Polignac number, because 1545136667 - 2¹⁰ = 1545135643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1545136661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2749073 + ... + 2749634.

It is an arithmetic number, because the mean of its divisors is an integer number (387658914).

Almost surely, 2^1545136667 is an apocalyptic number.

1545136667 is a deficient number, since it is larger than the sum of its proper divisors (5498989).

1545136667 is an equidigital number, since it uses as much as digits as its factorization.

1545136667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498988.

The product of its digits is 453600, while the sum is 44.

The square root of 1545136667 is about 39308.2264545222. The cubic root of 1545136667 is about 1156.0828701721.

The spelling of 1545136667 in words is "one billion, five hundred forty-five million, one hundred thirty-six thousand, six hundred sixty-seven".