1861516712 has 32 divisors (see below), whose sum is σ = 3814512480. Its totient is φ = 844618560.

The previous prime is 1861516703. The next prime is 1861516739. The reversal of 1861516712 is 2176151681.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30758 + ... + 68330.

It is an arithmetic number, because the mean of its divisors is an integer number (119203515).

Almost surely, 2^1861516712 is an apocalyptic number.

It is an amenable number.

1861516712 is an abundant number, since it is smaller than the sum of its proper divisors (1952995768).

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

1861516712 is a wasteful number, since it uses less digits than its factorization.

1861516712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38153 (or 38149 counting only the distinct ones).

The product of its digits is 20160, while the sum is 38.

The square root of 1861516712 is about 43145.2976812074. The cubic root of 1861516712 is about 1230.1431327032.

The spelling of 1861516712 in words is "one billion, eight hundred sixty-one million, five hundred sixteen thousand, seven hundred twelve".