105238191481 has 4 divisors (see below), whose sum is σ = 105239323764. Its totient is φ = 105237059200.

The previous prime is 105238191469. The next prime is 105238191491. The reversal of 105238191481 is 184191832501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184191832501 = 6379 ⋅28874719.

It can be written as a sum of positive squares in 2 ways, for example, as 69463873600 + 35774317881 = 263560^2 + 189141^2 .

It is a cyclic number.

It is not a de Polignac number, because 105238191481 - 2⁷ = 105238191353 is a prime.

It is a super-2 number, since 2×105238191481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105238191431) 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 3 ways as a sum of consecutive naturals, for example, 412900 + ... + 617221.

It is an arithmetic number, because the mean of its divisors is an integer number (26309830941).

Almost surely, 2^105238191481 is an apocalyptic number.

It is an amenable number.

105238191481 is a deficient number, since it is larger than the sum of its proper divisors (1132283).

105238191481 is a wasteful number, since it uses less digits than its factorization.

105238191481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132282.

The product of its (nonzero) digits is 69120, while the sum is 43.

The spelling of 105238191481 in words is "one hundred five billion, two hundred thirty-eight million, one hundred ninety-one thousand, four hundred eighty-one".