1161924539 has 4 divisors (see below), whose sum is σ = 1162480200. Its totient is φ = 1161368880.

The previous prime is 1161924451. The next prime is 1161924559. The reversal of 1161924539 is 9354291611.

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 1161924539 - 2²⁴ = 1145147323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161924496 and 1161924505.

It is not an unprimeable number, because it can be changed into a prime (1161924559) 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, 274682 + ... + 278879.

It is an arithmetic number, because the mean of its divisors is an integer number (290620050).

Almost surely, 2^1161924539 is an apocalyptic number.

1161924539 is a deficient number, since it is larger than the sum of its proper divisors (555661).

1161924539 is an equidigital number, since it uses as much as digits as its factorization.

1161924539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555660.

The product of its digits is 58320, while the sum is 41.

The square root of 1161924539 is about 34087.0142282952. The cubic root of 1161924539 is about 1051.2983301523.

The spelling of 1161924539 in words is "one billion, one hundred sixty-one million, nine hundred twenty-four thousand, five hundred thirty-nine".