1808784042 has 32 divisors (see below), whose sum is σ = 3917397120. Its totient is φ = 553469760.

The previous prime is 1808784023. The next prime is 1808784067. The reversal of 1808784042 is 2404878081.

It is a junction number, because it is equal to n+sod(n) for n = 1808783985 and 1808784003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49942 + ... + 78177.

It is an arithmetic number, because the mean of its divisors is an integer number (122418660).

Almost surely, 2^1808784042 is an apocalyptic number.

1808784042 is an abundant number, since it is smaller than the sum of its proper divisors (2108613078).

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

1808784042 is a wasteful number, since it uses less digits than its factorization.

1808784042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128318.

The product of its (nonzero) digits is 114688, while the sum is 42.

The square root of 1808784042 is about 42529.8018100249. The cubic root of 1808784042 is about 1218.4159415372.

The spelling of 1808784042 in words is "one billion, eight hundred eight million, seven hundred eighty-four thousand, forty-two".