985243151 has 4 divisors (see below), whose sum is σ = 985348752. Its totient is φ = 985137552.

The previous prime is 985243123. The next prime is 985243159. The reversal of 985243151 is 151342589.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 151342589 = 31 ⋅4882019.

It is a cyclic number.

It is not a de Polignac number, because 985243151 - 2¹⁰ = 985242127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985243159) 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, 37286 + ... + 57971.

It is an arithmetic number, because the mean of its divisors is an integer number (246337188).

Almost surely, 2^985243151 is an apocalyptic number.

985243151 is a deficient number, since it is larger than the sum of its proper divisors (105601).

985243151 is a wasteful number, since it uses less digits than its factorization.

985243151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105600.

The product of its digits is 43200, while the sum is 38.

The square root of 985243151 is about 31388.5831314508. The cubic root of 985243151 is about 995.0566539293.

The spelling of 985243151 in words is "nine hundred eighty-five million, two hundred forty-three thousand, one hundred fifty-one".