1149648623 has 4 divisors (see below), whose sum is σ = 1174109280. Its totient is φ = 1125187968.

The previous prime is 1149648607. The next prime is 1149648631. The reversal of 1149648623 is 3268469411.

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 1149648623 - 2⁴ = 1149648607 is a prime.

It is a super-2 number, since 2×1149648623² = 2643383912731592258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149648223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12230258 + ... + 12230351.

It is an arithmetic number, because the mean of its divisors is an integer number (293527320).

Almost surely, 2^1149648623 is an apocalyptic number.

1149648623 is a deficient number, since it is larger than the sum of its proper divisors (24460657).

1149648623 is an equidigital number, since it uses as much as digits as its factorization.

1149648623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24460656.

The product of its digits is 248832, while the sum is 44.

The square root of 1149648623 is about 33906.4687486031. The cubic root of 1149648623 is about 1047.5828367913.

The spelling of 1149648623 in words is "one billion, one hundred forty-nine million, six hundred forty-eight thousand, six hundred twenty-three".