1157440334 has 4 divisors (see below), whose sum is σ = 1736160504. Its totient is φ = 578720166.

The previous prime is 1157440307. The next prime is 1157440357. The reversal of 1157440334 is 4330447511.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1157440334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289360082 + ... + 289360085.

It is an arithmetic number, because the mean of its divisors is an integer number (434040126).

Almost surely, 2^1157440334 is an apocalyptic number.

1157440334 is a deficient number, since it is larger than the sum of its proper divisors (578720170).

1157440334 is an equidigital number, since it uses as much as digits as its factorization.

1157440334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578720169.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1157440334 is about 34021.1747886518. The cubic root of 1157440334 is about 1049.9441645290.

Adding to 1157440334 its reverse (4330447511), we get a palindrome (5487887845).

The spelling of 1157440334 in words is "one billion, one hundred fifty-seven million, four hundred forty thousand, three hundred thirty-four".