1840808042 has 12 divisors (see below), whose sum is σ = 2933191590. Its totient is φ = 866262336.

The previous prime is 1840808033. The next prime is 1840808051. The reversal of 1840808042 is 2408080481.

It is an interprime number because it is at equal distance from previous prime (1840808033) and next prime (1840808051).

It can be written as a sum of positive squares in 3 ways, for example, as 1796996881 + 43811161 = 42391^2 + 6619^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1840807993 and 1840808011.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1591817 + ... + 1592972.

Almost surely, 2^1840808042 is an apocalyptic number.

1840808042 is a deficient number, since it is larger than the sum of its proper divisors (1092383548).

1840808042 is a wasteful number, since it uses less digits than its factorization.

1840808042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184825 (or 3184808 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 1840808042 is about 42904.6389333368. The cubic root of 1840808042 is about 1225.5644860867.

The spelling of 1840808042 in words is "one billion, eight hundred forty million, eight hundred eight thousand, forty-two".