945491497 has 2 divisors, whose sum is σ = 945491498. Its totient is φ = 945491496.

The previous prime is 945491489. The next prime is 945491531. The reversal of 945491497 is 794194549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 881555481 + 63936016 = 29691^2 + 7996^2 .

It is a cyclic number.

It is not a de Polignac number, because 945491497 - 2³ = 945491489 is a prime.

It is not a weakly prime, because it can be changed into another prime (945498497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472745748 + 472745749.

It is an arithmetic number, because the mean of its divisors is an integer number (472745749).

Almost surely, 2^945491497 is an apocalyptic number.

It is an amenable number.

945491497 is a deficient number, since it is larger than the sum of its proper divisors (1).

945491497 is an equidigital number, since it uses as much as digits as its factorization.

945491497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The square root of 945491497 is about 30748.8454580005. The cubic root of 945491497 is about 981.4899925944.

The spelling of 945491497 in words is "nine hundred forty-five million, four hundred ninety-one thousand, four hundred ninety-seven".