1125670161 has 16 divisors (see below), whose sum is σ = 1871244288. Its totient is φ = 584763600.

The previous prime is 1125670157. The next prime is 1125670187. The reversal of 1125670161 is 1610765211.

It is not a de Polignac number, because 1125670161 - 2² = 1125670157 is a prime.

It is a super-2 number, since 2×1125670161² = 2534266622731531842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1125670111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2436285 + ... + 2436746.

It is an arithmetic number, because the mean of its divisors is an integer number (116952768).

Almost surely, 2^1125670161 is an apocalyptic number.

1125670161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1125670161 is a deficient number, since it is larger than the sum of its proper divisors (745574127).

1125670161 is a wasteful number, since it uses less digits than its factorization.

1125670161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873052.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1125670161 is about 33551.0083455028. The cubic root of 1125670161 is about 1040.2483877255.

The spelling of 1125670161 in words is "one billion, one hundred twenty-five million, six hundred seventy thousand, one hundred sixty-one".