1805967940 has 48 divisors (see below), whose sum is σ = 4368494592. Its totient is φ = 614307456.

The previous prime is 1805967871. The next prime is 1805967949. The reversal of 1805967940 is 497695081.

It is not an unprimeable number, because it can be changed into a prime (1805967949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33007 + ... + 68566.

It is an arithmetic number, because the mean of its divisors is an integer number (91010304).

Almost surely, 2^1805967940 is an apocalyptic number.

1805967940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1805967940 is an abundant number, since it is smaller than the sum of its proper divisors (2562526652).

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

1805967940 is a wasteful number, since it uses less digits than its factorization.

1805967940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101716 (or 101714 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1805967940 is about 42496.6815175020. The cubic root of 1805967940 is about 1217.7832944650.

The spelling of 1805967940 in words is "one billion, eight hundred five million, nine hundred sixty-seven thousand, nine hundred forty".