9745257169 has 4 divisors (see below), whose sum is σ = 9745460644. Its totient is φ = 9745053696.

The previous prime is 9745257167. The next prime is 9745257211. The reversal of 9745257169 is 9617525479.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9051619600 + 693637569 = 95140^2 + 26337^2 .

It is a cyclic number.

It is not a de Polignac number, because 9745257169 - 2¹ = 9745257167 is a prime.

It is a super-2 number, since 2×9745257169² (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 (9745257163) 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, 13969 + ... + 140305.

It is an arithmetic number, because the mean of its divisors is an integer number (2436365161).

Almost surely, 2^9745257169 is an apocalyptic number.

It is an amenable number.

9745257169 is a deficient number, since it is larger than the sum of its proper divisors (203475).

9745257169 is a wasteful number, since it uses less digits than its factorization.

9745257169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203474.

The product of its digits is 4762800, while the sum is 55.

The square root of 9745257169 is about 98718.0691109789. The cubic root of 9745257169 is about 2135.9828829894.

The spelling of 9745257169 in words is "nine billion, seven hundred forty-five million, two hundred fifty-seven thousand, one hundred sixty-nine".