157689867 has 8 divisors (see below), whose sum is σ = 210450240. Its totient is φ = 105028040.

The previous prime is 157689827. The next prime is 157689881. The reversal of 157689867 is 768986751.

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

It is a cyclic number.

It is not a de Polignac number, because 157689867 - 2¹⁹ = 157165579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157689827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20817 + ... + 27362.

It is an arithmetic number, because the mean of its divisors is an integer number (26306280).

Almost surely, 2^157689867 is an apocalyptic number.

157689867 is a deficient number, since it is larger than the sum of its proper divisors (52760373).

157689867 is a wasteful number, since it uses less digits than its factorization.

157689867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49273.

The product of its digits is 5080320, while the sum is 57.

The square root of 157689867 is about 12557.4626019750. The cubic root of 157689867 is about 540.2580693772.

The spelling of 157689867 in words is "one hundred fifty-seven million, six hundred eighty-nine thousand, eight hundred sixty-seven".