1157018 has 4 divisors (see below), whose sum is σ = 1735530. Its totient is φ = 578508.

The previous prime is 1157017. The next prime is 1157033. The reversal of 1157018 is 8107511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 69169 = 1043^2 + 263^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1156984 and 1157002.

It is not an unprimeable number, because it can be changed into a prime (1157011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289253 + ... + 289256.

2^1157018 is an apocalyptic number.

1157018 is a deficient number, since it is larger than the sum of its proper divisors (578512).

1157018 is an equidigital number, since it uses as much as digits as its factorization.

1157018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578511.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 1157018 is about 1075.6477118462. The cubic root of 1157018 is about 104.9816445616.

The spelling of 1157018 in words is "one million, one hundred fifty-seven thousand, eighteen".