1953085091 has 2 divisors, whose sum is σ = 1953085092. Its totient is φ = 1953085090.

The previous prime is 1953085087. The next prime is 1953085093. The reversal of 1953085091 is 1905803591.

It is a strong prime.

It is an emirp because it is prime and its reverse (1905803591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1953085091 - 2² = 1953085087 is a prime.

Together with 1953085093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1953085093) 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 as a sum of consecutive naturals, namely, 976542545 + 976542546.

It is an arithmetic number, because the mean of its divisors is an integer number (976542546).

Almost surely, 2^1953085091 is an apocalyptic number.

1953085091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953085091 is an equidigital number, since it uses as much as digits as its factorization.

1953085091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 1953085091 is about 44193.7223030602. The cubic root of 1953085091 is about 1249.9914860220.

The spelling of 1953085091 in words is "one billion, nine hundred fifty-three million, eighty-five thousand, ninety-one".