9451557049 has 16 divisors (see below), whose sum is σ = 11325358080. Its totient is φ = 7786175760.

The previous prime is 9451557041. The next prime is 9451557061. The reversal of 9451557049 is 9407551549.

It is a happy number.

9451557049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9451557049 - 2³ = 9451557041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9451556993 and 9451557011.

It is not an unprimeable number, because it can be changed into a prime (9451557041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 978297 + ... + 987910.

It is an arithmetic number, because the mean of its divisors is an integer number (707834880).

Almost surely, 2^9451557049 is an apocalyptic number.

It is an amenable number.

9451557049 is a deficient number, since it is larger than the sum of its proper divisors (1873801031).

9451557049 is a wasteful number, since it uses less digits than its factorization.

9451557049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966260.

The product of its (nonzero) digits is 1134000, while the sum is 49.

The square root of 9451557049 is about 97219.1187421487. The cubic root of 9451557049 is about 2114.3057295331.

The spelling of 9451557049 in words is "nine billion, four hundred fifty-one million, five hundred fifty-seven thousand, forty-nine".