1123641237 has 4 divisors (see below), whose sum is σ = 1498188320. Its totient is φ = 749094156.

The previous prime is 1123641223. The next prime is 1123641269. The reversal of 1123641237 is 7321463211.

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 not a de Polignac number, because 1123641237 - 2¹⁶ = 1123575701 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 (1123641217) 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, 187273537 + ... + 187273542.

It is an arithmetic number, because the mean of its divisors is an integer number (374547080).

Almost surely, 2^1123641237 is an apocalyptic number.

It is an amenable number.

1123641237 is a deficient number, since it is larger than the sum of its proper divisors (374547083).

1123641237 is an equidigital number, since it uses as much as digits as its factorization.

1123641237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374547082.

The product of its digits is 6048, while the sum is 30.

The square root of 1123641237 is about 33520.7582998953. The cubic root of 1123641237 is about 1039.6230256630.

The spelling of 1123641237 in words is "one billion, one hundred twenty-three million, six hundred forty-one thousand, two hundred thirty-seven".