157985898 has 48 divisors (see below), whose sum is σ = 374531040. Its totient is φ = 44282784.

The previous prime is 157985897. The next prime is 157985899. The reversal of 157985898 is 898589751.

157985898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (157985897) and next prime (157985899).

It is not an unprimeable number, because it can be changed into a prime (157985897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10513 + ... + 20651.

It is an arithmetic number, because the mean of its divisors is an integer number (7802730).

Almost surely, 2^157985898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157985898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187265520).

157985898 is an abundant number, since it is smaller than the sum of its proper divisors (216545142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157985898 is a wasteful number, since it uses less digits than its factorization.

157985898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211 (or 10204 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 60.

The square root of 157985898 is about 12569.2441300183. The cubic root of 157985898 is about 540.5959333187.

The spelling of 157985898 in words is "one hundred fifty-seven million, nine hundred eighty-five thousand, eight hundred ninety-eight".