1147855923 has 6 divisors (see below), whose sum is σ = 1658014124. Its totient is φ = 765237276.

The previous prime is 1147855909. The next prime is 1147855939. The reversal of 1147855923 is 3295587411.

1147855923 is a `hidden beast` number, since 1 + 1 + 4 + 78 + 559 + 23 = 666.

It is not a de Polignac number, because 1147855923 - 2¹⁰ = 1147854899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147855123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63769765 + ... + 63769782.

Almost surely, 2^1147855923 is an apocalyptic number.

1147855923 is a deficient number, since it is larger than the sum of its proper divisors (510158201).

1147855923 is a wasteful number, since it uses less digits than its factorization.

1147855923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127539553 (or 127539550 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 1147855923 is about 33880.0224763798. The cubic root of 1147855923 is about 1047.0380388092.

The spelling of 1147855923 in words is "one billion, one hundred forty-seven million, eight hundred fifty-five thousand, nine hundred twenty-three".