11015971849 has 9 divisors (see below), whose sum is σ = 11134888653. Its totient is φ = 10898315052.

The previous prime is 11015971847. The next prime is 11015971873. The reversal of 11015971849 is 94817951011.

It is a happy number.

The square root of 11015971849 is 104957.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11015971849 - 2¹ = 11015971847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11015971799 and 11015971808.

It is not an unprimeable number, because it can be changed into a prime (11015971847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10810062 + ... + 10811080.

Almost surely, 2^11015971849 is an apocalyptic number.

11015971849 is the 104957-th square number.

11015971849 is the 52479-th centered octagonal number.

It is an amenable number.

11015971849 is a deficient number, since it is larger than the sum of its proper divisors (118916804).

11015971849 is an frugal number, since it uses more digits than its factorization.

11015971849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 46.

The spelling of 11015971849 in words is "eleven billion, fifteen million, nine hundred seventy-one thousand, eight hundred forty-nine".