1958091958 has 4 divisors (see below), whose sum is σ = 2937137940. Its totient is φ = 979045978.

The previous prime is 1958091953. The next prime is 1958091973. The reversal of 1958091958 is 8591908591.

1958091958 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1958091899 and 1958091908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1958091953) 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, 489522988 + ... + 489522991.

It is an arithmetic number, because the mean of its divisors is an integer number (734284485).

Almost surely, 2^1958091958 is an apocalyptic number.

1958091958 is a deficient number, since it is larger than the sum of its proper divisors (979045982).

1958091958 is an equidigital number, since it uses as much as digits as its factorization.

1958091958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979045981.

The product of its (nonzero) digits is 1166400, while the sum is 55.

The square root of 1958091958 is about 44250.3328575052. The cubic root of 1958091958 is about 1251.0587207418.

The spelling of 1958091958 in words is "one billion, nine hundred fifty-eight million, ninety-one thousand, nine hundred fifty-eight".