9051251649 has 16 divisors (see below), whose sum is σ = 13413864384. Its totient is φ = 5382104000.

The previous prime is 9051251647. The next prime is 9051251669. The reversal of 9051251649 is 9461521509.

It is a cyclic number.

It is not a de Polignac number, because 9051251649 - 2¹ = 9051251647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9051251649.

It is not an unprimeable number, because it can be changed into a prime (9051251641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2585802 + ... + 2589299.

It is an arithmetic number, because the mean of its divisors is an integer number (838366524).

Almost surely, 2^9051251649 is an apocalyptic number.

It is an amenable number.

9051251649 is a deficient number, since it is larger than the sum of its proper divisors (4362612735).

9051251649 is a wasteful number, since it uses less digits than its factorization.

9051251649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175168.

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 9051251649 is about 95138.0662458514. The cubic root of 9051251649 is about 2084.0247860154.

The spelling of 9051251649 in words is "nine billion, fifty-one million, two hundred fifty-one thousand, six hundred forty-nine".