1157820539 has 8 divisors (see below), whose sum is σ = 1189539840. Its totient is φ = 1126123776.

The previous prime is 1157820497. The next prime is 1157820577. The reversal of 1157820539 is 9350287511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157820539 - 2⁸ = 1157820283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157820496 and 1157820505.

It is not an unprimeable number, because it can be changed into a prime (1157820589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186347 + ... + 192459.

It is an arithmetic number, because the mean of its divisors is an integer number (148692480).

Almost surely, 2^1157820539 is an apocalyptic number.

1157820539 is a deficient number, since it is larger than the sum of its proper divisors (31719301).

1157820539 is an equidigital number, since it uses as much as digits as its factorization.

1157820539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11269.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 1157820539 is about 34026.7620998531. The cubic root of 1157820539 is about 1050.0591165507.

The spelling of 1157820539 in words is "one billion, one hundred fifty-seven million, eight hundred twenty thousand, five hundred thirty-nine".