898642774731 has 16 divisors (see below), whose sum is σ = 1291823557920. Its totient is φ = 552383208960.

The previous prime is 898642774721. The next prime is 898642774741. The reversal of 898642774731 is 137477246898.

It is an interprime number because it is at equal distance from previous prime (898642774721) and next prime (898642774741).

It is not a de Polignac number, because 898642774731 - 2¹⁷ = 898642643659 is a prime.

It is a super-2 number, since 2×898642774731² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (898642774721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13042896 + ... + 13111613.

It is an arithmetic number, because the mean of its divisors is an integer number (80738972370).

Almost surely, 2^898642774731 is an apocalyptic number.

898642774731 is a deficient number, since it is larger than the sum of its proper divisors (393180783189).

898642774731 is a wasteful number, since it uses less digits than its factorization.

898642774731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26155406.

The product of its digits is 113799168, while the sum is 66.

The spelling of 898642774731 in words is "eight hundred ninety-eight billion, six hundred forty-two million, seven hundred seventy-four thousand, seven hundred thirty-one".