1166367543 has 16 divisors (see below), whose sum is σ = 1716978816. Its totient is φ = 698371040.

The previous prime is 1166367523. The next prime is 1166367563. The reversal of 1166367543 is 3457636611.

It is an interprime number because it is at equal distance from previous prime (1166367523) and next prime (1166367563).

It is a cyclic number.

It is not a de Polignac number, because 1166367543 - 2⁵ = 1166367511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1166367495 and 1166367504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166367523) 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, 210180 + ... + 215657.

It is an arithmetic number, because the mean of its divisors is an integer number (107311176).

Almost surely, 2^1166367543 is an apocalyptic number.

1166367543 is a deficient number, since it is larger than the sum of its proper divisors (550611273).

1166367543 is a wasteful number, since it uses less digits than its factorization.

1166367543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425934.

The product of its digits is 272160, while the sum is 42.

The square root of 1166367543 is about 34152.1235503738. The cubic root of 1166367543 is about 1052.6366217933.

The spelling of 1166367543 in words is "one billion, one hundred sixty-six million, three hundred sixty-seven thousand, five hundred forty-three".