1863378774 has 24 divisors (see below), whose sum is σ = 4045431000. Its totient is φ = 619878528.

The previous prime is 1863378749. The next prime is 1863378821. The reversal of 1863378774 is 4778733681.

It is a self number, because there is not a number n which added to its sum of digits gives 1863378774.

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 11 ways as a sum of consecutive naturals, for example, 94747 + ... + 112710.

It is an arithmetic number, because the mean of its divisors is an integer number (168559625).

Almost surely, 2^1863378774 is an apocalyptic number.

1863378774 is an abundant number, since it is smaller than the sum of its proper divisors (2182052226).

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

1863378774 is a wasteful number, since it uses less digits than its factorization.

1863378774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207964 (or 207961 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 1863378774 is about 43166.8712556284. The cubic root of 1863378774 is about 1230.5531638414.

The spelling of 1863378774 in words is "one billion, eight hundred sixty-three million, three hundred seventy-eight thousand, seven hundred seventy-four".