1131645115 has 8 divisors (see below), whose sum is σ = 1358164080. Its totient is φ = 905189472.

The previous prime is 1131645083. The next prime is 1131645127. The reversal of 1131645115 is 5115461311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131645115 - 2⁵ = 1131645083 is a prime.

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, 44172 + ... + 64918.

It is an arithmetic number, because the mean of its divisors is an integer number (169770510).

Almost surely, 2^1131645115 is an apocalyptic number.

1131645115 is a deficient number, since it is larger than the sum of its proper divisors (226518965).

1131645115 is a wasteful number, since it uses less digits than its factorization.

1131645115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31661.

The product of its digits is 1800, while the sum is 28.

The square root of 1131645115 is about 33639.9333382217. The cubic root of 1131645115 is about 1042.0856552205.

It can be divided in two parts, 1131645 and 115, that added together give a triangular number (1131760 = T₁₅₀₄).

The spelling of 1131645115 in words is "one billion, one hundred thirty-one million, six hundred forty-five thousand, one hundred fifteen".