9051251669 has 2 divisors, whose sum is σ = 9051251670. Its totient is φ = 9051251668.

The previous prime is 9051251647. The next prime is 9051251687. The reversal of 9051251669 is 9661521509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5308871044 + 3742380625 = 72862^2 + 61175^2 .

It is a cyclic number.

It is not a de Polignac number, because 9051251669 - 2⁸ = 9051251413 is a prime.

It is a super-2 number, since 2×9051251669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9051250669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4525625834 + 4525625835.

It is an arithmetic number, because the mean of its divisors is an integer number (4525625835).

Almost surely, 2^9051251669 is an apocalyptic number.

It is an amenable number.

9051251669 is a deficient number, since it is larger than the sum of its proper divisors (1).

9051251669 is an equidigital number, since it uses as much as digits as its factorization.

9051251669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 9051251669 is about 95138.0663509617. The cubic root of 9051251669 is about 2084.0247875504.

The spelling of 9051251669 in words is "nine billion, fifty-one million, two hundred fifty-one thousand, six hundred sixty-nine".