1157132078 has 4 divisors (see below), whose sum is σ = 1735698120. Its totient is φ = 578566038.

The previous prime is 1157132077. The next prime is 1157132083. The reversal of 1157132078 is 8702317511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8702317511 = 43 ⋅202379477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157132077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289283018 + ... + 289283021.

It is an arithmetic number, because the mean of its divisors is an integer number (433924530).

Almost surely, 2^1157132078 is an apocalyptic number.

1157132078 is a deficient number, since it is larger than the sum of its proper divisors (578566042).

1157132078 is an equidigital number, since it uses as much as digits as its factorization.

1157132078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578566041.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 1157132078 is about 34016.6441319540. The cubic root of 1157132078 is about 1049.8509472474.

Adding to 1157132078 its reverse (8702317511), we get a palindrome (9859449589).

The spelling of 1157132078 in words is "one billion, one hundred fifty-seven million, one hundred thirty-two thousand, seventy-eight".