906198432281 has 2 divisors, whose sum is σ = 906198432282. Its totient is φ = 906198432280.

The previous prime is 906198432241. The next prime is 906198432299. The reversal of 906198432281 is 182234891609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 898734336256 + 7464096025 = 948016^2 + 86395^2 .

It is an emirp because it is prime and its reverse (182234891609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 906198432281 - 2²⁶ = 906131323417 is a prime.

It is a super-2 number, since 2×906198432281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (906198432211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453099216140 + 453099216141.

It is an arithmetic number, because the mean of its divisors is an integer number (453099216141).

Almost surely, 2^906198432281 is an apocalyptic number.

It is an amenable number.

906198432281 is a deficient number, since it is larger than the sum of its proper divisors (1).

906198432281 is an equidigital number, since it uses as much as digits as its factorization.

906198432281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 906198432281 in words is "nine hundred six billion, one hundred ninety-eight million, four hundred thirty-two thousand, two hundred eighty-one".