945784651 has 4 divisors (see below), whose sum is σ = 1080896752. Its totient is φ = 810672552.

The previous prime is 945784649. The next prime is 945784657. The reversal of 945784651 is 156487549.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156487549 = 277 ⋅564937.

It is a cyclic number.

It is not a de Polignac number, because 945784651 - 2¹ = 945784649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 945784595 and 945784604.

It is not an unprimeable number, because it can be changed into a prime (945784657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67556040 + ... + 67556053.

It is an arithmetic number, because the mean of its divisors is an integer number (270224188).

Almost surely, 2^945784651 is an apocalyptic number.

945784651 is a deficient number, since it is larger than the sum of its proper divisors (135112101).

945784651 is a wasteful number, since it uses less digits than its factorization.

945784651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135112100.

The product of its digits is 1209600, while the sum is 49.

The square root of 945784651 is about 30753.6119992433. The cubic root of 945784651 is about 981.5914206123.

The spelling of 945784651 in words is "nine hundred forty-five million, seven hundred eighty-four thousand, six hundred fifty-one".