1101899481797 has 4 divisors (see below), whose sum is σ = 1128775078956. Its totient is φ = 1075023884640.

The previous prime is 1101899481769. The next prime is 1101899481803. The reversal of 1101899481797 is 7971849981011.

It is a Cunningham number, because it is equal to 1049714²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53096141476 + 1048803340321 = 230426^2 + 1024111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101899481797 - 2¹⁴ = 1101899465413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101899481757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13437798518 + ... + 13437798599.

It is an arithmetic number, because the mean of its divisors is an integer number (282193769739).

Almost surely, 2^{1101899481797} is an apocalyptic number.

It is an amenable number.

1101899481797 is a deficient number, since it is larger than the sum of its proper divisors (26875597159).

1101899481797 is an equidigital number, since it uses as much as digits as its factorization.

1101899481797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26875597158.

The product of its (nonzero) digits is 9144576, while the sum is 65.

The spelling of 1101899481797 in words is "one trillion, one hundred one billion, eight hundred ninety-nine million, four hundred eighty-one thousand, seven hundred ninety-seven".