157135778 has 8 divisors (see below), whose sum is σ = 240151068. Its totient is φ = 77085424.

The previous prime is 157135763. The next prime is 157135843. The reversal of 157135778 is 877531751.

It can be written as a sum of positive squares in 2 ways, for example, as 156825529 + 310249 = 12523^2 + 557^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741101 + ... + 741312.

Almost surely, 2^157135778 is an apocalyptic number.

157135778 is a deficient number, since it is larger than the sum of its proper divisors (83015290).

157135778 is a wasteful number, since it uses less digits than its factorization.

157135778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482468.

The product of its digits is 205800, while the sum is 44.

The square root of 157135778 is about 12535.3810472598. The cubic root of 157135778 is about 539.6245423915.

The spelling of 157135778 in words is "one hundred fifty-seven million, one hundred thirty-five thousand, seven hundred seventy-eight".