1861386048 has 56 divisors (see below), whose sum is σ = 5472135360. Its totient is φ = 620461440.

The previous prime is 1861386013. The next prime is 1861386143. The reversal of 1861386048 is 8406831681.

It is a happy number.

1861386048 is a `hidden beast` number, since 1 + 8 + 6 + 1 + 38 + 604 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1861385994 and 1861386012.

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, 536868 + ... + 540323.

Almost surely, 2^1861386048 is an apocalyptic number.

1861386048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1861386048 is an abundant number, since it is smaller than the sum of its proper divisors (3610749312).

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

1861386048 is a wasteful number, since it uses less digits than its factorization.

1861386048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077212 (or 1077196 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1861386048 is about 43143.7834224121. The cubic root of 1861386048 is about 1230.1143498686.

The spelling of 1861386048 in words is "one billion, eight hundred sixty-one million, three hundred eighty-six thousand, forty-eight".