157693985 has 8 divisors (see below), whose sum is σ = 189630720. Its totient is φ = 125889904.

The previous prime is 157693951. The next prime is 157694041. The reversal of 157693985 is 589396751.

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 157693985 - 2⁸ = 157693729 is a prime.

It is an unprimeable number.

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, 30527 + ... + 35316.

It is an arithmetic number, because the mean of its divisors is an integer number (23703840).

Almost surely, 2^157693985 is an apocalyptic number.

It is an amenable number.

157693985 is a deficient number, since it is larger than the sum of its proper divisors (31936735).

157693985 is an equidigital number, since it uses as much as digits as its factorization.

157693985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66327.

The product of its digits is 2041200, while the sum is 53.

The square root of 157693985 is about 12557.6265671503. The cubic root of 157693985 is about 540.2627722018.

The spelling of 157693985 in words is "one hundred fifty-seven million, six hundred ninety-three thousand, nine hundred eighty-five".