1809910116 has 48 divisors (see below), whose sum is σ = 5362698880. Its totient is φ = 517116960.

The previous prime is 1809910087. The next prime is 1809910133. The reversal of 1809910116 is 6110199081.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 1196275 + ... + 1197786.

Almost surely, 2^1809910116 is an apocalyptic number.

It is an amenable number.

1809910116 is an abundant number, since it is smaller than the sum of its proper divisors (3552788764).

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

1809910116 is a wasteful number, since it uses less digits than its factorization.

1809910116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394081 (or 2394073 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 36.

The square root of 1809910116 is about 42543.0383964286. The cubic root of 1809910116 is about 1218.6687341790.

It can be divided in two parts, 1809 and 910116, that added together give a triangular number (911925 = T₁₃₅₀).

The spelling of 1809910116 in words is "one billion, eight hundred nine million, nine hundred ten thousand, one hundred sixteen".