191430982938 has 32 divisors (see below), whose sum is σ = 425613307392. Its totient is φ = 57001780800.

The previous prime is 191430982931. The next prime is 191430982943. The reversal of 191430982938 is 839289034191.

191430982938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×191430982938² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (191430982931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39582153 + ... + 39586988.

It is an arithmetic number, because the mean of its divisors is an integer number (13300415856).

Almost surely, 2^191430982938 is an apocalyptic number.

191430982938 is an abundant number, since it is smaller than the sum of its proper divisors (234182324454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191430982938 is a wasteful number, since it uses less digits than its factorization.

191430982938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79169190.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The spelling of 191430982938 in words is "one hundred ninety-one billion, four hundred thirty million, nine hundred eighty-two thousand, nine hundred thirty-eight".