1868959212 has 12 divisors (see below), whose sum is σ = 4360904856. Its totient is φ = 622986400.

The previous prime is 1868959189. The next prime is 1868959219. The reversal of 1868959212 is 2129598681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1868959212² = 6986017072239321888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1868959219) 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, 77873289 + ... + 77873312.

It is an arithmetic number, because the mean of its divisors is an integer number (363408738).

Almost surely, 2^1868959212 is an apocalyptic number.

1868959212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1868959212 is an abundant number, since it is smaller than the sum of its proper divisors (2491945644).

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

1868959212 is a wasteful number, since it uses less digits than its factorization.

1868959212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155746608 (or 155746606 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 1868959212 is about 43231.4609052250. The cubic root of 1868959212 is about 1231.7803578688.

The spelling of 1868959212 in words is "one billion, eight hundred sixty-eight million, nine hundred fifty-nine thousand, two hundred twelve".