1157478671 has 4 divisors (see below), whose sum is σ = 1168716432. Its totient is φ = 1146240912.

The previous prime is 1157478649. The next prime is 1157478737. The reversal of 1157478671 is 1768747511.

It is a happy number.

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 1157478671 - 2¹⁰ = 1157477647 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 (1157478871) 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, 5618726 + ... + 5618931.

It is an arithmetic number, because the mean of its divisors is an integer number (292179108).

Almost surely, 2^1157478671 is an apocalyptic number.

1157478671 is a deficient number, since it is larger than the sum of its proper divisors (11237761).

1157478671 is a wasteful number, since it uses less digits than its factorization.

1157478671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11237760.

The product of its digits is 329280, while the sum is 47.

The square root of 1157478671 is about 34021.7382125017. The cubic root of 1157478671 is about 1049.9557565636.

The spelling of 1157478671 in words is "one billion, one hundred fifty-seven million, four hundred seventy-eight thousand, six hundred seventy-one".