8145745398 has 336 divisors, whose sum is σ = 23818918320. Its totient is φ = 2069286912.

The previous prime is 8145745373. The next prime is 8145745409. The reversal of 8145745398 is 8935475418.

8145745398 is a `hidden beast` number, since 8 + 14 + 574 + 53 + 9 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 167 ways as a sum of consecutive naturals, for example, 23075590 + ... + 23075942.

Almost surely, 2^8145745398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8145745398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11909459160).

8145745398 is an abundant number, since it is smaller than the sum of its proper divisors (15673172922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8145745398 is a wasteful number, since it uses less digits than its factorization.

8145745398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 401 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 8145745398 is about 90253.7832891231. The cubic root of 8145745398 is about 2012.0724314100.

The spelling of 8145745398 in words is "eight billion, one hundred forty-five million, seven hundred forty-five thousand, three hundred ninety-eight".