8451891298 has 16 divisors (see below), whose sum is σ = 12719777400. Its totient is φ = 4211980416.

The previous prime is 8451891289. The next prime is 8451891307. The reversal of 8451891298 is 8921981548.

It is an interprime number because it is at equal distance from previous prime (8451891289) and next prime (8451891307).

It can be written as a sum of positive squares in 4 ways, for example, as 8052011289 + 399880009 = 89733^2 + 19997^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1815678 + ... + 1820326.

Almost surely, 2^8451891298 is an apocalyptic number.

8451891298 is a deficient number, since it is larger than the sum of its proper divisors (4267886102).

8451891298 is a wasteful number, since it uses less digits than its factorization.

8451891298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461.

The product of its digits is 1658880, while the sum is 55.

The square root of 8451891298 is about 91934.1682836148. The cubic root of 8451891298 is about 2036.9700066446.

The spelling of 8451891298 in words is "eight billion, four hundred fifty-one million, eight hundred ninety-one thousand, two hundred ninety-eight".