945045641 has 2 divisors, whose sum is σ = 945045642. Its totient is φ = 945045640.

The previous prime is 945045631. The next prime is 945045667. The reversal of 945045641 is 146540549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 760656400 + 184389241 = 27580^2 + 13579^2 .

It is an emirp because it is prime and its reverse (146540549) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945045641 is a prime.

It is a super-2 number, since 2×945045641² = 1786222527146201762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 945045595 and 945045604.

It is not a weakly prime, because it can be changed into another prime (945045631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472522820 + 472522821.

It is an arithmetic number, because the mean of its divisors is an integer number (472522821).

Almost surely, 2^945045641 is an apocalyptic number.

It is an amenable number.

945045641 is a deficient number, since it is larger than the sum of its proper divisors (1).

945045641 is an equidigital number, since it uses as much as digits as its factorization.

945045641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 945045641 is about 30741.5946398361. The cubic root of 945045641 is about 981.3356911872.

The spelling of 945045641 in words is "nine hundred forty-five million, forty-five thousand, six hundred forty-one".