1955348947 has 2 divisors, whose sum is σ = 1955348948. Its totient is φ = 1955348946.

The previous prime is 1955348911. The next prime is 1955349007. The reversal of 1955348947 is 7498435591.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1955348947 - 2⁷ = 1955348819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1955348047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977674473 + 977674474.

It is an arithmetic number, because the mean of its divisors is an integer number (977674474).

Almost surely, 2^1955348947 is an apocalyptic number.

1955348947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955348947 is an equidigital number, since it uses as much as digits as its factorization.

1955348947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 55.

The square root of 1955348947 is about 44219.3277538228. The cubic root of 1955348947 is about 1250.4742620643.

The spelling of 1955348947 in words is "one billion, nine hundred fifty-five million, three hundred forty-eight thousand, nine hundred forty-seven".