151857943 has 4 divisors (see below), whose sum is σ = 152767440. Its totient is φ = 150948448.

The previous prime is 151857911. The next prime is 151857961. The reversal of 151857943 is 349758151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151857943 - 2⁵ = 151857911 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 151857943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151857743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454498 + ... + 454831.

It is an arithmetic number, because the mean of its divisors is an integer number (38191860).

Almost surely, 2^151857943 is an apocalyptic number.

151857943 is a deficient number, since it is larger than the sum of its proper divisors (909497).

151857943 is an equidigital number, since it uses as much as digits as its factorization.

151857943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909496.

The product of its digits is 151200, while the sum is 43.

The square root of 151857943 is about 12323.0654871262. The cubic root of 151857943 is about 533.5140212865.

The spelling of 151857943 in words is "one hundred fifty-one million, eight hundred fifty-seven thousand, nine hundred forty-three".