1889985552 has 160 divisors (see below), whose sum is σ = 6058278912. Its totient is φ = 494387712.

The previous prime is 1889985541. The next prime is 1889985563. The reversal of 1889985552 is 2555899881.

It is an interprime number because it is at equal distance from previous prime (1889985541) and next prime (1889985563).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553033 + ... + 556439.

Almost surely, 2^1889985552 is an apocalyptic number.

1889985552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1889985552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3029139456).

1889985552 is an abundant number, since it is smaller than the sum of its proper divisors (4168293360).

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

1889985552 is a wasteful number, since it uses less digits than its factorization.

1889985552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565 (or 3559 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 60.

The square root of 1889985552 is about 43473.9640704641. The cubic root of 1889985552 is about 1236.3824394409.

The spelling of 1889985552 in words is "one billion, eight hundred eighty-nine million, nine hundred eighty-five thousand, five hundred fifty-two".