1896997550 has 48 divisors (see below), whose sum is σ = 4118307840. Its totient is φ = 636555360.

The previous prime is 1896997537. The next prime is 1896997567. The reversal of 1896997550 is 557996981.

It is a self number, because there is not a number n which added to its sum of digits gives 1896997550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41210 + ... + 74109.

It is an arithmetic number, because the mean of its divisors is an integer number (85798080).

Almost surely, 2^1896997550 is an apocalyptic number.

1896997550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1896997550 is an abundant number, since it is smaller than the sum of its proper divisors (2221310290).

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

1896997550 is a wasteful number, since it uses less digits than its factorization.

1896997550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115385 (or 115380 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 59.

The square root of 1896997550 is about 43554.5353551154. The cubic root of 1896997550 is about 1237.9095784006.

The spelling of 1896997550 in words is "one billion, eight hundred ninety-six million, nine hundred ninety-seven thousand, five hundred fifty".