1861202016 has 48 divisors (see below), whose sum is σ = 5428508400. Its totient is φ = 620400384.

The previous prime is 1861201999. The next prime is 1861202039. The reversal of 1861202016 is 6102021681.

1861202016 is a `hidden beast` number, since 18 + 612 + 0 + 20 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076221 + ... + 1077948.

It is an arithmetic number, because the mean of its divisors is an integer number (113093925).

Almost surely, 2^1861202016 is an apocalyptic number.

1861202016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1861202016 is an abundant number, since it is smaller than the sum of its proper divisors (3567306384).

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

1861202016 is a wasteful number, since it uses less digits than its factorization.

1861202016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154188 (or 2154174 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1861202016 is about 43141.6505942923. The cubic root of 1861202016 is about 1230.0738087773.

Adding to 1861202016 its reverse (6102021681), we get a palindrome (7963223697).

The spelling of 1861202016 in words is "one billion, eight hundred sixty-one million, two hundred two thousand, sixteen".