981842355 has 24 divisors (see below), whose sum is σ = 1832773488. Its totient is φ = 483368256.

The previous prime is 981842341. The next prime is 981842359. The reversal of 981842355 is 553248189.

It is not a de Polignac number, because 981842355 - 2⁴ = 981842339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 981842355.

It is not an unprimeable number, because it can be changed into a prime (981842359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 838597 + ... + 839766.

It is an arithmetic number, because the mean of its divisors is an integer number (76365562).

Almost surely, 2^981842355 is an apocalyptic number.

981842355 is a deficient number, since it is larger than the sum of its proper divisors (850931133).

981842355 is a wasteful number, since it uses less digits than its factorization.

981842355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678387 (or 1678384 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 981842355 is about 31334.3638039773. The cubic root of 981842355 is about 993.9104442498.

The spelling of 981842355 in words is "nine hundred eighty-one million, eight hundred forty-two thousand, three hundred fifty-five".