157438843 has 4 divisors (see below), whose sum is σ = 157995448. Its totient is φ = 156882240.

The previous prime is 157438829. The next prime is 157438847. The reversal of 157438843 is 348834751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348834751 = 2341 ⋅149011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157438843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157438843.

It is not an unprimeable number, because it can be changed into a prime (157438847) 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, 277878 + ... + 278443.

It is an arithmetic number, because the mean of its divisors is an integer number (39498862).

Almost surely, 2^157438843 is an apocalyptic number.

157438843 is a deficient number, since it is larger than the sum of its proper divisors (556605).

157438843 is an equidigital number, since it uses as much as digits as its factorization.

157438843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556604.

The product of its digits is 322560, while the sum is 43.

The square root of 157438843 is about 12547.4636082357. The cubic root of 157438843 is about 539.9712410381.

The spelling of 157438843 in words is "one hundred fifty-seven million, four hundred thirty-eight thousand, eight hundred forty-three".