1171489400 has 48 divisors (see below), whose sum is σ = 2761058400. Its totient is φ = 462170880.

The previous prime is 1171489399. The next prime is 1171489409. The reversal of 1171489400 is 49841711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171489409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25520 + ... + 54719.

It is an arithmetic number, because the mean of its divisors is an integer number (57522050).

Almost surely, 2^1171489400 is an apocalyptic number.

1171489400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171489400 is an abundant number, since it is smaller than the sum of its proper divisors (1589569000).

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

1171489400 is a wasteful number, since it uses less digits than its factorization.

1171489400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80328 (or 80319 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1171489400 is about 34227.0273322122. The cubic root of 1171489400 is about 1054.1751824489.

The spelling of 1171489400 in words is "one billion, one hundred seventy-one million, four hundred eighty-nine thousand, four hundred".