9056901781 has 2 divisors, whose sum is σ = 9056901782. Its totient is φ = 9056901780.

The previous prime is 9056901769. The next prime is 9056901839. The reversal of 9056901781 is 1871096509.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8678599281 + 378302500 = 93159^2 + 19450^2 .

It is a cyclic number.

It is not a de Polignac number, because 9056901781 - 2²⁵ = 9023347349 is a prime.

It is a super-2 number, since 2×9056901781² (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 (9056901701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4528450890 + 4528450891.

It is an arithmetic number, because the mean of its divisors is an integer number (4528450891).

Almost surely, 2^9056901781 is an apocalyptic number.

It is an amenable number.

9056901781 is a deficient number, since it is larger than the sum of its proper divisors (1).

9056901781 is an equidigital number, since it uses as much as digits as its factorization.

9056901781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 9056901781 is about 95167.7559943493. The cubic root of 9056901781 is about 2084.4583380552.

The spelling of 9056901781 in words is "nine billion, fifty-six million, nine hundred one thousand, seven hundred eighty-one".