1989852607 has 4 divisors (see below), whose sum is σ = 1994284800. Its totient is φ = 1985420416.

The previous prime is 1989852589. The next prime is 1989852619. The reversal of 1989852607 is 7062589891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1989852607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989852647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215423 + ... + 2216320.

It is an arithmetic number, because the mean of its divisors is an integer number (498571200).

Almost surely, 2^1989852607 is an apocalyptic number.

1989852607 is a deficient number, since it is larger than the sum of its proper divisors (4432193).

1989852607 is an equidigital number, since it uses as much as digits as its factorization.

1989852607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432192.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The square root of 1989852607 is about 44607.7639766891. The cubic root of 1989852607 is about 1257.7866169858.

The spelling of 1989852607 in words is "one billion, nine hundred eighty-nine million, eight hundred fifty-two thousand, six hundred seven".