981258336398 has 16 divisors (see below), whose sum is σ = 1474216930080. Its totient is φ = 489853139616.

The previous prime is 981258336397. The next prime is 981258336407. The reversal of 981258336398 is 893633852189.

It is a super-2 number, since 2×981258336398² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981258336397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4355111 + ... + 4574877.

It is an arithmetic number, because the mean of its divisors is an integer number (92138558130).

Almost surely, 2^981258336398 is an apocalyptic number.

981258336398 is a deficient number, since it is larger than the sum of its proper divisors (492958593682).

981258336398 is a wasteful number, since it uses less digits than its factorization.

981258336398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223291.

The product of its digits is 67184640, while the sum is 65.

The spelling of 981258336398 in words is "nine hundred eighty-one billion, two hundred fifty-eight million, three hundred thirty-six thousand, three hundred ninety-eight".