1131941169 has 16 divisors (see below), whose sum is σ = 1765211200. Its totient is φ = 714909888.

The previous prime is 1131941147. The next prime is 1131941191. The reversal of 1131941169 is 9611491311.

It is an interprime number because it is at equal distance from previous prime (1131941147) and next prime (1131941191).

It is not a de Polignac number, because 1131941169 - 2⁹ = 1131940657 is a prime.

It is a super-2 number, since 2×1131941169² = 2562581620154173122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1131945169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102744 + ... + 1103769.

It is an arithmetic number, because the mean of its divisors is an integer number (110325700).

Almost surely, 2^1131941169 is an apocalyptic number.

1131941169 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1131941169 is a deficient number, since it is larger than the sum of its proper divisors (633270031).

1131941169 is a wasteful number, since it uses less digits than its factorization.

1131941169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206541 (or 2206535 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 1131941169 is about 33644.3333861737. Note that the first 4 decimals coincide. The cubic root of 1131941169 is about 1042.1765219662.

The spelling of 1131941169 in words is "one billion, one hundred thirty-one million, nine hundred forty-one thousand, one hundred sixty-nine".