1956469847 has 2 divisors, whose sum is σ = 1956469848. Its totient is φ = 1956469846.

The previous prime is 1956469819. The next prime is 1956469849. The reversal of 1956469847 is 7489646591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1956469847 - 2⁶ = 1956469783 is a prime.

Together with 1956469849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1956469849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978234923 + 978234924.

It is an arithmetic number, because the mean of its divisors is an integer number (978234924).

Almost surely, 2^1956469847 is an apocalyptic number.

1956469847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956469847 is an equidigital number, since it uses as much as digits as its factorization.

1956469847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The square root of 1956469847 is about 44232.0002599928. Note that the first 3 decimals coincide. The cubic root of 1956469847 is about 1250.7131604044.

The spelling of 1956469847 in words is "one billion, nine hundred fifty-six million, four hundred sixty-nine thousand, eight hundred forty-seven".