1154331623 has 4 divisors (see below), whose sum is σ = 1156961520. Its totient is φ = 1151701728.

The previous prime is 1154331617. The next prime is 1154331653. The reversal of 1154331623 is 3261334511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1154331623 - 2⁶ = 1154331559 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 (1154331653) 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, 1314290 + ... + 1315167.

It is an arithmetic number, because the mean of its divisors is an integer number (289240380).

Almost surely, 2^1154331623 is an apocalyptic number.

1154331623 is a deficient number, since it is larger than the sum of its proper divisors (2629897).

1154331623 is an equidigital number, since it uses as much as digits as its factorization.

1154331623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629896.

The product of its digits is 6480, while the sum is 29.

The square root of 1154331623 is about 33975.4561853112. The cubic root of 1154331623 is about 1049.0033242322.

The spelling of 1154331623 in words is "one billion, one hundred fifty-four million, three hundred thirty-one thousand, six hundred twenty-three".