1956065945 has 4 divisors (see below), whose sum is σ = 2347279140. Its totient is φ = 1564852752.

The previous prime is 1956065933. The next prime is 1956065957. The reversal of 1956065945 is 5495606591.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1956065933) and next prime (1956065957).

It can be written as a sum of positive squares in 2 ways, for example, as 712516249 + 1243549696 = 26693^2 + 35264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1956065945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1956065893 and 1956065902.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195606590 + ... + 195606599.

It is an arithmetic number, because the mean of its divisors is an integer number (586819785).

Almost surely, 2^1956065945 is an apocalyptic number.

It is an amenable number.

1956065945 is a deficient number, since it is larger than the sum of its proper divisors (391213195).

1956065945 is an equidigital number, since it uses as much as digits as its factorization.

1956065945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391213194.

The product of its (nonzero) digits is 1458000, while the sum is 50.

The square root of 1956065945 is about 44227.4343027040. The cubic root of 1956065945 is about 1250.6270869570.

The spelling of 1956065945 in words is "one billion, nine hundred fifty-six million, sixty-five thousand, nine hundred forty-five".