9049651969 has 4 divisors (see below), whose sum is σ = 9049869396. Its totient is φ = 9049434544.

The previous prime is 9049651913. The next prime is 9049651991. The reversal of 9049651969 is 9691569409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9691569409 = 23 ⋅421372583.

It can be written as a sum of positive squares in 2 ways, for example, as 1775779600 + 7273872369 = 42140^2 + 85287^2 .

It is a cyclic number.

It is not a de Polignac number, because 9049651969 - 2⁷ = 9049651841 is a prime.

It is a super-2 number, since 2×9049651969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9049651909) 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, 24574 + ... + 136759.

It is an arithmetic number, because the mean of its divisors is an integer number (2262467349).

Almost surely, 2^9049651969 is an apocalyptic number.

It is an amenable number.

9049651969 is a deficient number, since it is larger than the sum of its proper divisors (217427).

9049651969 is a wasteful number, since it uses less digits than its factorization.

9049651969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217426.

The product of its (nonzero) digits is 4723920, while the sum is 58.

The square root of 9049651969 is about 95129.6587242906. The cubic root of 9049651969 is about 2083.9020048681.

The spelling of 9049651969 in words is "nine billion, forty-nine million, six hundred fifty-one thousand, nine hundred sixty-nine".