1801381016 has 8 divisors (see below), whose sum is σ = 3377589420. Its totient is φ = 900690504.

The previous prime is 1801381009. The next prime is 1801381027. The reversal of 1801381016 is 6101831081.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1801381016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112586306 + ... + 112586321.

Almost surely, 2^1801381016 is an apocalyptic number.

It is an amenable number.

1801381016 is a deficient number, since it is larger than the sum of its proper divisors (1576208404).

1801381016 is a wasteful number, since it uses less digits than its factorization.

1801381016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225172633 (or 225172629 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1801381016 is about 42442.6791802780. The cubic root of 1801381016 is about 1216.7514165605.

The spelling of 1801381016 in words is "one billion, eight hundred one million, three hundred eighty-one thousand, sixteen".