157341681 has 48 divisors (see below), whose sum is σ = 277789824. Its totient is φ = 83768832.

The previous prime is 157341677. The next prime is 157341703. The reversal of 157341681 is 186143751.

157341681 is a `hidden beast` number, since 1 + 573 + 4 + 1 + 6 + 81 = 666.

It is not a de Polignac number, because 157341681 - 2² = 157341677 is a prime.

It is a super-2 number, since 2×157341681² = 49512809159811522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157341281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113911 + ... + 115283.

It is an arithmetic number, because the mean of its divisors is an integer number (5787288).

Almost surely, 2^157341681 is an apocalyptic number.

It is an amenable number.

157341681 is a deficient number, since it is larger than the sum of its proper divisors (120448143).

157341681 is a wasteful number, since it uses less digits than its factorization.

157341681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1507 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 157341681 is about 12543.5912321791. The cubic root of 157341681 is about 539.8601386758.

The spelling of 157341681 in words is "one hundred fifty-seven million, three hundred forty-one thousand, six hundred eighty-one".