1801500450 has 48 divisors (see below), whose sum is σ = 4495191456. Its totient is φ = 477446400.

The previous prime is 1801500439. The next prime is 1801500457. The reversal of 1801500450 is 540051081.

It is a self number, because there is not a number n which added to its sum of digits gives 1801500450.

It is not an unprimeable number, because it can be changed into a prime (1801500457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12391 + ... + 61290.

It is an arithmetic number, because the mean of its divisors is an integer number (93649822).

Almost surely, 2^1801500450 is an apocalyptic number.

1801500450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1801500450 is an abundant number, since it is smaller than the sum of its proper divisors (2693691006).

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

1801500450 is a wasteful number, since it uses less digits than its factorization.

1801500450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73859 (or 73854 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1801500450 is about 42444.0861605006. The cubic root of 1801500450 is about 1216.7783067216.

The spelling of 1801500450 in words is "one billion, eight hundred one million, five hundred thousand, four hundred fifty".