1147388545 has 4 divisors (see below), whose sum is σ = 1376866260. Its totient is φ = 917910832.

The previous prime is 1147388533. The next prime is 1147388551. The reversal of 1147388545 is 5458837411.

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 593068609 + 554319936 = 24353^2 + 23544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147388545 - 2²¹ = 1145291393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1147388495 and 1147388504.

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, 114738850 + ... + 114738859.

It is an arithmetic number, because the mean of its divisors is an integer number (344216565).

Almost surely, 2^1147388545 is an apocalyptic number.

It is an amenable number.

1147388545 is a deficient number, since it is larger than the sum of its proper divisors (229477715).

1147388545 is an equidigital number, since it uses as much as digits as its factorization.

1147388545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229477714.

The product of its digits is 537600, while the sum is 46.

The square root of 1147388545 is about 33873.1242285089. The cubic root of 1147388545 is about 1046.8959103509.

The spelling of 1147388545 in words is "one billion, one hundred forty-seven million, three hundred eighty-eight thousand, five hundred forty-five".