1111386545 has 4 divisors (see below), whose sum is σ = 1333663860. Its totient is φ = 889109232.

The previous prime is 1111386541. The next prime is 1111386613. The reversal of 1111386545 is 5456831111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5456831111 = 2833 ⋅1926167.

It can be written as a sum of positive squares in 2 ways, for example, as 405740449 + 705646096 = 20143^2 + 26564^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111386545 - 2² = 1111386541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111386541) 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, 111138650 + ... + 111138659.

It is an arithmetic number, because the mean of its divisors is an integer number (333415965).

Almost surely, 2^1111386545 is an apocalyptic number.

It is an amenable number.

1111386545 is a deficient number, since it is larger than the sum of its proper divisors (222277315).

1111386545 is an equidigital number, since it uses as much as digits as its factorization.

1111386545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222277314.

The product of its digits is 14400, while the sum is 35.

The square root of 1111386545 is about 33337.4645856580. The cubic root of 1111386545 is about 1035.8297452937.

The spelling of 1111386545 in words is "one billion, one hundred eleven million, three hundred eighty-six thousand, five hundred forty-five".