1861396848 has 50 divisors (see below), whose sum is σ = 5387426264. Its totient is φ = 620465184.

The previous prime is 1861396837. The next prime is 1861396853. The reversal of 1861396848 is 8486931681.

1861396848 is a `hidden beast` number, since 18 + 613 + 9 + 6 + 8 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1861396794 and 1861396803.

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 9 ways as a sum of consecutive naturals, for example, 716836 + ... + 719427.

Almost surely, 2^1861396848 is an apocalyptic number.

1861396848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1861396848 is an abundant number, since it is smaller than the sum of its proper divisors (3526029416).

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

1861396848 is a wasteful number, since it uses less digits than its factorization.

1861396848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436283 (or 1436268 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 1861396848 is about 43143.9085851062. The cubic root of 1861396848 is about 1230.1167289576.

The spelling of 1861396848 in words is "one billion, eight hundred sixty-one million, three hundred ninety-six thousand, eight hundred forty-eight".