1940318840 has 32 divisors (see below), whose sum is σ = 4439718000. Its totient is φ = 762971904.

The previous prime is 1940318837. The next prime is 1940318869. The reversal of 1940318840 is 488130491.

It is a junction number, because it is equal to n+sod(n) for n = 1940318794 and 1940318803.

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, 408725 + ... + 413444.

Almost surely, 2^1940318840 is an apocalyptic number.

1940318840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1940318840 is an abundant number, since it is smaller than the sum of its proper divisors (2499399160).

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

1940318840 is a wasteful number, since it uses less digits than its factorization.

1940318840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822239 (or 822235 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1940318840 is about 44049.0503870401. The cubic root of 1940318840 is about 1247.2620263791.

The spelling of 1940318840 in words is "one billion, nine hundred forty million, three hundred eighteen thousand, eight hundred forty".