1155654243 has 16 divisors (see below), whose sum is σ = 1712628640. Its totient is φ = 770189472.

The previous prime is 1155654229. The next prime is 1155654287. The reversal of 1155654243 is 3424565511.

1155654243 is a `hidden beast` number, since 1 + 15 + 565 + 42 + 43 = 666.

It is not a de Polignac number, because 1155654243 - 2²⁶ = 1088545379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1155654198 and 1155654207.

It is not an unprimeable number, because it can be changed into a prime (1155654293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125505 + ... + 134397.

It is an arithmetic number, because the mean of its divisors is an integer number (107039290).

Almost surely, 2^1155654243 is an apocalyptic number.

1155654243 is a deficient number, since it is larger than the sum of its proper divisors (556974397).

1155654243 is an equidigital number, since it uses as much as digits as its factorization.

1155654243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13715 (or 13709 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 1155654243 is about 33994.9149579757. The cubic root of 1155654243 is about 1049.4038166570.

The spelling of 1155654243 in words is "one billion, one hundred fifty-five million, six hundred fifty-four thousand, two hundred forty-three".