1956168947 has 4 divisors (see below), whose sum is σ = 2009038416. Its totient is φ = 1903299480.

The previous prime is 1956168931. The next prime is 1956168953. The reversal of 1956168947 is 7498616591.

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

It is a cyclic number.

It is not a de Polignac number, because 1956168947 - 2⁴ = 1956168931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1956168892 and 1956168901.

It is not an unprimeable number, because it can be changed into a prime (1956168967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26434679 + ... + 26434752.

It is an arithmetic number, because the mean of its divisors is an integer number (502259604).

Almost surely, 2^1956168947 is an apocalyptic number.

1956168947 is a deficient number, since it is larger than the sum of its proper divisors (52869469).

1956168947 is an equidigital number, since it uses as much as digits as its factorization.

1956168947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52869468.

The product of its digits is 3265920, while the sum is 56.

The square root of 1956168947 is about 44228.5987456080. The cubic root of 1956168947 is about 1250.6490383011.

The spelling of 1956168947 in words is "one billion, nine hundred fifty-six million, one hundred sixty-eight thousand, nine hundred forty-seven".