157692993 has 8 divisors (see below), whose sum is σ = 210544800. Its totient is φ = 104984928.

The previous prime is 157692961. The next prime is 157693007. The reversal of 157692993 is 399296751.

It is a happy number.

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

It is not a de Polignac number, because 157692993 - 2⁵ = 157692961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157692793) 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, 33348 + ... + 37781.

It is an arithmetic number, because the mean of its divisors is an integer number (26318100).

Almost surely, 2^157692993 is an apocalyptic number.

It is an amenable number.

157692993 is a deficient number, since it is larger than the sum of its proper divisors (52851807).

157692993 is an equidigital number, since it uses as much as digits as its factorization.

157692993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71871.

The product of its digits is 918540, while the sum is 51.

The square root of 157692993 is about 12557.5870691785. The cubic root of 157692993 is about 540.2616393287.

The spelling of 157692993 in words is "one hundred fifty-seven million, six hundred ninety-two thousand, nine hundred ninety-three".