70191983 has 2 divisors, whose sum is σ = 70191984. Its totient is φ = 70191982.

The previous prime is 70191943. The next prime is 70192007. The reversal of 70191983 is 38919107.

It is a strong prime.

It is an emirp because it is prime and its reverse (38919107) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70191983 - 2¹⁶ = 70126447 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70191943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35095991 + 35095992.

It is an arithmetic number, because the mean of its divisors is an integer number (35095992).

Almost surely, 2^70191983 is an apocalyptic number.

70191983 is a deficient number, since it is larger than the sum of its proper divisors (1).

70191983 is an equidigital number, since it uses as much as digits as its factorization.

70191983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 70191983 is about 8378.0655881892. The cubic root of 70191983 is about 412.5049559245.

The spelling of 70191983 in words is "seventy million, one hundred ninety-one thousand, nine hundred eighty-three".