7186861812 has 48 divisors (see below), whose sum is σ = 18641864192. Its totient is φ = 2140007040.

The previous prime is 7186861807. The next prime is 7186861817. The reversal of 7186861812 is 2181686817.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7186861807) and next prime (7186861817).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7186861817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738223 + ... + 747894.

Almost surely, 2^7186861812 is an apocalyptic number.

It is an amenable number.

7186861812 is an abundant number, since it is smaller than the sum of its proper divisors (11455002380).

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

7186861812 is a wasteful number, since it uses less digits than its factorization.

7186861812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486168 (or 1486166 counting only the distinct ones).

The product of its digits is 258048, while the sum is 48.

The square root of 7186861812 is about 84775.3608780287. The cubic root of 7186861812 is about 1929.8035373234.

The spelling of 7186861812 in words is "seven billion, one hundred eighty-six million, eight hundred sixty-one thousand, eight hundred twelve".