70191943 has 2 divisors, whose sum is σ = 70191944. Its totient is φ = 70191942.

The previous prime is 70191941. The next prime is 70191983. The reversal of 70191943 is 34919107.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70191943 - 2¹ = 70191941 is a prime.

Together with 70191941, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 70191899 and 70191908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70191941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35095971 + 35095972.

It is an arithmetic number, because the mean of its divisors is an integer number (35095972).

Almost surely, 2^70191943 is an apocalyptic number.

70191943 is a deficient number, since it is larger than the sum of its proper divisors (1).

70191943 is an equidigital number, since it uses as much as digits as its factorization.

70191943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 70191943 is about 8378.0632010030. The cubic root of 70191943 is about 412.5048775671.

The spelling of 70191943 in words is "seventy million, one hundred ninety-one thousand, nine hundred forty-three".