1167521020 has 12 divisors (see below), whose sum is σ = 2451794184. Its totient is φ = 467008400.

The previous prime is 1167521011. The next prime is 1167521021. The reversal of 1167521020 is 201257611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167521021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29188006 + ... + 29188045.

It is an arithmetic number, because the mean of its divisors is an integer number (204316182).

Almost surely, 2^1167521020 is an apocalyptic number.

1167521020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1167521020 is an abundant number, since it is smaller than the sum of its proper divisors (1284273164).

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

1167521020 is a wasteful number, since it uses less digits than its factorization.

1167521020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58376060 (or 58376058 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1167521020 is about 34169.0067166138. The cubic root of 1167521020 is about 1052.9835084735.

Adding to 1167521020 its reverse (201257611), we get a palindrome (1368778631).

The spelling of 1167521020 in words is "one billion, one hundred sixty-seven million, five hundred twenty-one thousand, twenty".