1157438 has 4 divisors (see below), whose sum is σ = 1736160. Its totient is φ = 578718.

The previous prime is 1157437. The next prime is 1157449. The reversal of 1157438 is 8347511.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157437) 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, 289358 + ... + 289361.

It is an arithmetic number, because the mean of its divisors is an integer number (434040).

2^1157438 is an apocalyptic number.

1157438 is a deficient number, since it is larger than the sum of its proper divisors (578722).

1157438 is an equidigital number, since it uses as much as digits as its factorization.

1157438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578721.

The product of its digits is 3360, while the sum is 29.

The square root of 1157438 is about 1075.8429253381. The cubic root of 1157438 is about 104.9943458785.

The spelling of 1157438 in words is "one million, one hundred fifty-seven thousand, four hundred thirty-eight".