1154974789 has 4 divisors (see below), whose sum is σ = 1159056256. Its totient is φ = 1150893324.

The previous prime is 1154974787. The next prime is 1154974811. The reversal of 1154974789 is 9874794511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1154974789 - 2¹ = 1154974787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154974787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040309 + ... + 2040874.

It is an arithmetic number, because the mean of its divisors is an integer number (289764064).

Almost surely, 2^1154974789 is an apocalyptic number.

It is an amenable number.

1154974789 is a deficient number, since it is larger than the sum of its proper divisors (4081467).

1154974789 is an equidigital number, since it uses as much as digits as its factorization.

1154974789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081466.

The product of its digits is 2540160, while the sum is 55.

The square root of 1154974789 is about 33984.9200234457. The cubic root of 1154974789 is about 1049.1981145886.

The spelling of 1154974789 in words is "one billion, one hundred fifty-four million, nine hundred seventy-four thousand, seven hundred eighty-nine".