1157694227 has 4 divisors (see below), whose sum is σ = 1157821056. Its totient is φ = 1157567400.

The previous prime is 1157694217. The next prime is 1157694253. The reversal of 1157694227 is 7224967511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7224967511 = 47 ⋅153722713.

It is a cyclic number.

It is not a de Polignac number, because 1157694227 - 2¹⁸ = 1157432083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157694217) 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, 48563 + ... + 68364.

It is an arithmetic number, because the mean of its divisors is an integer number (289455264).

Almost surely, 2^1157694227 is an apocalyptic number.

1157694227 is a deficient number, since it is larger than the sum of its proper divisors (126829).

1157694227 is an equidigital number, since it uses as much as digits as its factorization.

1157694227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126828.

The product of its digits is 211680, while the sum is 44.

The square root of 1157694227 is about 34024.9059807665. The cubic root of 1157694227 is about 1050.0209298927.

The spelling of 1157694227 in words is "one billion, one hundred fifty-seven million, six hundred ninety-four thousand, two hundred twenty-seven".