1073145881 has 2 divisors, whose sum is σ = 1073145882. Its totient is φ = 1073145880.

The previous prime is 1073145839. The next prime is 1073145889. The reversal of 1073145881 is 1885413701.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 939974281 + 133171600 = 30659^2 + 11540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073145881 - 2¹⁰ = 1073144857 is a prime.

It is a super-2 number, since 2×1073145881² = 2303284163814532322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1073145889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536572940 + 536572941.

It is an arithmetic number, because the mean of its divisors is an integer number (536572941).

Almost surely, 2^1073145881 is an apocalyptic number.

It is an amenable number.

1073145881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073145881 is an equidigital number, since it uses as much as digits as its factorization.

1073145881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 1073145881 is about 32758.9053693801. The cubic root of 1073145881 is about 1023.8105197632.

The spelling of 1073145881 in words is "one billion, seventy-three million, one hundred forty-five thousand, eight hundred eighty-one".