1163571420 has 48 divisors (see below), whose sum is σ = 3554183808. Its totient is φ = 282077760.

The previous prime is 1163571413. The next prime is 1163571469. The reversal of 1163571420 is 241753611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880834 + ... + 882153.

It is an arithmetic number, because the mean of its divisors is an integer number (74045496).

Almost surely, 2^1163571420 is an apocalyptic number.

1163571420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163571420 is an abundant number, since it is smaller than the sum of its proper divisors (2390612388).

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

1163571420 is a wasteful number, since it uses less digits than its factorization.

1163571420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763010 (or 1763008 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1163571420 is about 34111.1626890670. The cubic root of 1163571420 is about 1051.7947897859.

The spelling of 1163571420 in words is "one billion, one hundred sixty-three million, five hundred seventy-one thousand, four hundred twenty".