1808195488 has 96 divisors (see below), whose sum is σ = 3999445632. Its totient is φ = 797721600.

The previous prime is 1808195453. The next prime is 1808195491. The reversal of 1808195488 is 8845918081.

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, 1921098 + ... + 1922038.

It is an arithmetic number, because the mean of its divisors is an integer number (41660892).

Almost surely, 2^1808195488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808195488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1999722816).

1808195488 is an abundant number, since it is smaller than the sum of its proper divisors (2191250144).

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

1808195488 is a wasteful number, since it uses less digits than its factorization.

1808195488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 52.

The square root of 1808195488 is about 42522.8819343186. The cubic root of 1808195488 is about 1218.2837751477.

It can be divided in two parts, 18081 and 95488, that added together give a square (113569 = 337²).

The spelling of 1808195488 in words is "one billion, eight hundred eight million, one hundred ninety-five thousand, four hundred eighty-eight".