9451398155 has 4 divisors (see below), whose sum is σ = 11341677792. Its totient is φ = 7561118520.

The previous prime is 9451398139. The next prime is 9451398157. The reversal of 9451398155 is 5518931549.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9451398155 - 2⁴ = 9451398139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9451398157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945139811 + ... + 945139820.

It is an arithmetic number, because the mean of its divisors is an integer number (2835419448).

Almost surely, 2^9451398155 is an apocalyptic number.

9451398155 is a deficient number, since it is larger than the sum of its proper divisors (1890279637).

9451398155 is a wasteful number, since it uses less digits than its factorization.

9451398155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890279636.

The product of its digits is 972000, while the sum is 50.

The square root of 9451398155 is about 97218.3015434851. The cubic root of 9451398155 is about 2114.2938813132.

The spelling of 9451398155 in words is "nine billion, four hundred fifty-one million, three hundred ninety-eight thousand, one hundred fifty-five".