1138079545 has 4 divisors (see below), whose sum is σ = 1365695460. Its totient is φ = 910463632.

The previous prime is 1138079543. The next prime is 1138079549. The reversal of 1138079545 is 5459708311.

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 719795241 + 418284304 = 26829^2 + 20452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138079545 - 2¹ = 1138079543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1138079543) 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, 113807950 + ... + 113807959.

It is an arithmetic number, because the mean of its divisors is an integer number (341423865).

Almost surely, 2^1138079545 is an apocalyptic number.

It is an amenable number.

1138079545 is a deficient number, since it is larger than the sum of its proper divisors (227615915).

1138079545 is an equidigital number, since it uses as much as digits as its factorization.

1138079545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227615914.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 1138079545 is about 33735.4345607108. The cubic root of 1138079545 is about 1044.0569913668.

The spelling of 1138079545 in words is "one billion, one hundred thirty-eight million, seventy-nine thousand, five hundred forty-five".