1091910101038 has 16 divisors (see below), whose sum is σ = 1657641646080. Its totient is φ = 539363228536.

The previous prime is 1091910101017. The next prime is 1091910101057. The reversal of 1091910101038 is 8301010191901.

It is a junction number, because it is equal to n+sod(n) for n = 1091910100994 and 1091910101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9582483 + ... + 9695761.

It is an arithmetic number, because the mean of its divisors is an integer number (103602602880).

Almost surely, 2^{1091910101038} is an apocalyptic number.

1091910101038 is a deficient number, since it is larger than the sum of its proper divisors (565731545042).

1091910101038 is a wasteful number, since it uses less digits than its factorization.

1091910101038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171431.

The product of its (nonzero) digits is 1944, while the sum is 34.

Adding to 1091910101038 its reverse (8301010191901), we get a palindrome (9392920292939).

The spelling of 1091910101038 in words is "one trillion, ninety-one billion, nine hundred ten million, one hundred one thousand, thirty-eight".