157801634 has 8 divisors (see below), whose sum is σ = 236835228. Its totient is φ = 78856560.

The previous prime is 157801621. The next prime is 157801639. The reversal of 157801634 is 436108751.

It can be written as a sum of positive squares in 2 ways, for example, as 141681409 + 16120225 = 11903^2 + 4015^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 157801594 and 157801603.

It is not an unprimeable number, because it can be changed into a prime (157801639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17477 + ... + 24920.

Almost surely, 2^157801634 is an apocalyptic number.

157801634 is a deficient number, since it is larger than the sum of its proper divisors (79033594).

157801634 is a wasteful number, since it uses less digits than its factorization.

157801634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44260.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 157801634 is about 12561.9120359920. The cubic root of 157801634 is about 540.3856801200.

The spelling of 157801634 in words is "one hundred fifty-seven million, eight hundred one thousand, six hundred thirty-four".