1868670648 has 80 divisors (see below), whose sum is σ = 5636649480. Its totient is φ = 574972992.

The previous prime is 1868670637. The next prime is 1868670659. The reversal of 1868670648 is 8460768681.

It is an interprime number because it is at equal distance from previous prime (1868670637) and next prime (1868670659).

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

It is a junction number, because it is equal to n+sod(n) for n = 1868670594 and 1868670603.

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 19 ways as a sum of consecutive naturals, for example, 102490 + ... + 119337.

Almost surely, 2^1868670648 is an apocalyptic number.

1868670648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1868670648 is an abundant number, since it is smaller than the sum of its proper divisors (3767978832).

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

1868670648 is a wasteful number, since it uses less digits than its factorization.

1868670648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221858 (or 221845 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 1868670648 is about 43228.1233458035. The cubic root of 1868670648 is about 1231.7169597023.

The spelling of 1868670648 in words is "one billion, eight hundred sixty-eight million, six hundred seventy thousand, six hundred forty-eight".