1015136545 has 4 divisors (see below), whose sum is σ = 1218163860. Its totient is φ = 812109232.

The previous prime is 1015136539. The next prime is 1015136567. The reversal of 1015136545 is 5456315101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5456315101 = 19 ⋅287174479.

It can be written as a sum of positive squares in 2 ways, for example, as 397763136 + 617373409 = 19944^2 + 24847^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015136545 - 2⁵ = 1015136513 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101513650 + ... + 101513659.

It is an arithmetic number, because the mean of its divisors is an integer number (304540965).

Almost surely, 2^1015136545 is an apocalyptic number.

It is an amenable number.

1015136545 is a deficient number, since it is larger than the sum of its proper divisors (203027315).

1015136545 is an equidigital number, since it uses as much as digits as its factorization.

1015136545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203027314.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 1015136545 is about 31861.2075257671. The cubic root of 1015136545 is about 1005.0202697165.

The spelling of 1015136545 in words is "one billion, fifteen million, one hundred thirty-six thousand, five hundred forty-five".