1157530378 has 8 divisors (see below), whose sum is σ = 1739049120. Its totient is φ = 577847340.

The previous prime is 1157530349. The next prime is 1157530379. The reversal of 1157530378 is 8730357511.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1157530378.

It is not an unprimeable number, because it can be changed into a prime (1157530379) 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, 457348 + ... + 459871.

It is an arithmetic number, because the mean of its divisors is an integer number (217381140).

Almost surely, 2^1157530378 is an apocalyptic number.

1157530378 is a deficient number, since it is larger than the sum of its proper divisors (581518742).

1157530378 is an equidigital number, since it uses as much as digits as its factorization.

1157530378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917852.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 1157530378 is about 34022.4981152178. The cubic root of 1157530378 is about 1049.9713909061.

Adding to 1157530378 its reverse (8730357511), we get a palindrome (9887887889).

The spelling of 1157530378 in words is "one billion, one hundred fifty-seven million, five hundred thirty thousand, three hundred seventy-eight".