945784649 has 2 divisors, whose sum is σ = 945784650. Its totient is φ = 945784648.

The previous prime is 945784643. The next prime is 945784657. The reversal of 945784649 is 946487549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621604624 + 324180025 = 24932^2 + 18005^2 .

It is a cyclic number.

It is not a de Polignac number, because 945784649 - 2¹² = 945780553 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 945784594 and 945784603.

It is not a weakly prime, because it can be changed into another prime (945784643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472892324 + 472892325.

It is an arithmetic number, because the mean of its divisors is an integer number (472892325).

Almost surely, 2^945784649 is an apocalyptic number.

It is an amenable number.

945784649 is a deficient number, since it is larger than the sum of its proper divisors (1).

945784649 is an equidigital number, since it uses as much as digits as its factorization.

945784649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 56.

The square root of 945784649 is about 30753.6119667268. The cubic root of 945784649 is about 981.5914199203.

The spelling of 945784649 in words is "nine hundred forty-five million, seven hundred eighty-four thousand, six hundred forty-nine".