1890800544 has 48 divisors (see below), whose sum is σ = 4967494560. Its totient is φ = 629740800.

The previous prime is 1890800543. The next prime is 1890800557. The reversal of 1890800544 is 4450080981.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1890800543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117327 + ... + 132465.

It is an arithmetic number, because the mean of its divisors is an integer number (103489470).

Almost surely, 2^1890800544 is an apocalyptic number.

It is an amenable number.

1890800544 is an abundant number, since it is smaller than the sum of its proper divisors (3076694016).

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

1890800544 is a wasteful number, since it uses less digits than its factorization.

1890800544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16453 (or 16445 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 1890800544 is about 43483.3363945316. The cubic root of 1890800544 is about 1236.5601298636.

The spelling of 1890800544 in words is "one billion, eight hundred ninety million, eight hundred thousand, five hundred forty-four".