1157878426 has 8 divisors (see below), whose sum is σ = 1737142560. Its totient is φ = 578830908.

The previous prime is 1157878409. The next prime is 1157878429. The reversal of 1157878426 is 6248787511.

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 1157878426.

It is not an unprimeable number, because it can be changed into a prime (1157878429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40056 + ... + 62611.

It is an arithmetic number, because the mean of its divisors is an integer number (217142820).

Almost surely, 2^1157878426 is an apocalyptic number.

1157878426 is a deficient number, since it is larger than the sum of its proper divisors (579264134).

1157878426 is a wasteful number, since it uses less digits than its factorization.

1157878426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108308.

The product of its digits is 752640, while the sum is 49.

The square root of 1157878426 is about 34027.6126991007. The cubic root of 1157878426 is about 1050.0766160269.

The spelling of 1157878426 in words is "one billion, one hundred fifty-seven million, eight hundred seventy-eight thousand, four hundred twenty-six".