1154551667 has 4 divisors (see below), whose sum is σ = 1155717696. Its totient is φ = 1153385640.

The previous prime is 1154551637. The next prime is 1154551687. The reversal of 1154551667 is 7661554511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7661554511 = 13 ⋅589350347.

It is a cyclic number.

It is not a de Polignac number, because 1154551667 - 2¹⁰ = 1154550643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154551637) 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, 581528 + ... + 583509.

It is an arithmetic number, because the mean of its divisors is an integer number (288929424).

Almost surely, 2^1154551667 is an apocalyptic number.

1154551667 is a deficient number, since it is larger than the sum of its proper divisors (1166029).

1154551667 is an equidigital number, since it uses as much as digits as its factorization.

1154551667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166028.

The product of its digits is 126000, while the sum is 41.

The square root of 1154551667 is about 33978.6943098171. The cubic root of 1154551667 is about 1049.0699752758.

The spelling of 1154551667 in words is "one billion, one hundred fifty-four million, five hundred fifty-one thousand, six hundred sixty-seven".