1863628140 has 48 divisors (see below), whose sum is σ = 5692538880. Its totient is φ = 451788480.

The previous prime is 1863628097. The next prime is 1863628157. The reversal of 1863628140 is 418263681.

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 15 ways as a sum of consecutive naturals, for example, 1411180 + ... + 1412499.

It is an arithmetic number, because the mean of its divisors is an integer number (118594560).

Almost surely, 2^1863628140 is an apocalyptic number.

1863628140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1863628140 is an abundant number, since it is smaller than the sum of its proper divisors (3828910740).

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

1863628140 is a wasteful number, since it uses less digits than its factorization.

1863628140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823702 (or 2823700 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1863628140 is about 43169.7595545771. The cubic root of 1863628140 is about 1230.6080541723.

It can be divided in two parts, 1863 and 628140, that added together give a triangular number (630003 = T₁₁₂₂).

The spelling of 1863628140 in words is "one billion, eight hundred sixty-three million, six hundred twenty-eight thousand, one hundred forty".