1161671500 has 48 divisors (see below), whose sum is σ = 2767748256. Its totient is φ = 422424000.

The previous prime is 1161671479. The next prime is 1161671507. The reversal of 1161671500 is 51761611.

It is not an unprimeable number, because it can be changed into a prime (1161671507) 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, 100107 + ... + 111106.

It is an arithmetic number, because the mean of its divisors is an integer number (57661422).

Almost surely, 2^1161671500 is an apocalyptic number.

1161671500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161671500 is an abundant number, since it is smaller than the sum of its proper divisors (1606076756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161671500 is a wasteful number, since it uses less digits than its factorization.

1161671500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211243 (or 211231 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1161671500 is about 34083.3023634741. The cubic root of 1161671500 is about 1051.2220088473. Note that the first 3 decimals are identical.

The spelling of 1161671500 in words is "one billion, one hundred sixty-one million, six hundred seventy-one thousand, five hundred".