1881297800 has 36 divisors (see below), whose sum is σ = 4375444005. Its totient is φ = 752273760.

The previous prime is 1881297797. The next prime is 1881297827. The reversal of 1881297800 is 87921881.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1843671844 + 37625956 = 42938^2 + 6134^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30670.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 611867 + ... + 614933.

Almost surely, 2^1881297800 is an apocalyptic number.

1881297800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1881297800 is an abundant number, since it is smaller than the sum of its proper divisors (2494146205).

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

1881297800 is an frugal number, since it uses more digits than its factorization.

1881297800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150 (or 3074 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 44.

The square root of 1881297800 is about 43373.9299579828. The cubic root of 1881297800 is about 1234.4850907952.

The spelling of 1881297800 in words is "one billion, eight hundred eighty-one million, two hundred ninety-seven thousand, eight hundred".