1667112220 has 24 divisors (see below), whose sum is σ = 3653151264. Its totient is φ = 637851456.

The previous prime is 1667112211. The next prime is 1667112233. The reversal of 1667112220 is 222117661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811619 + ... + 1812538.

It is an arithmetic number, because the mean of its divisors is an integer number (152214636).

Almost surely, 2^1667112220 is an apocalyptic number.

1667112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1667112220 is an abundant number, since it is smaller than the sum of its proper divisors (1986039044).

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

1667112220 is a wasteful number, since it uses less digits than its factorization.

1667112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624189 (or 3624187 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1667112220 is about 40830.2855733339. The cubic root of 1667112220 is about 1185.7367444612.

Adding to 1667112220 its reverse (222117661), we get a palindrome (1889229881).

The spelling of 1667112220 in words is "one billion, six hundred sixty-seven million, one hundred twelve thousand, two hundred twenty".