143195989 has 8 divisors (see below), whose sum is σ = 151660640. Its totient is φ = 134824176.

The previous prime is 143195971. The next prime is 143196007. The reversal of 143195989 is 989591341.

It is an interprime number because it is at equal distance from previous prime (143195971) and next prime (143196007).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143195989 - 2¹⁵ = 143163221 is a prime.

It is a Duffinian number.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143195909) 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, 20022 + ... + 26215.

It is an arithmetic number, because the mean of its divisors is an integer number (18957580).

Almost surely, 2^143195989 is an apocalyptic number.

143195989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

143195989 is a deficient number, since it is larger than the sum of its proper divisors (8464651).

143195989 is a wasteful number, since it uses less digits than its factorization.

143195989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46419.

The product of its digits is 349920, while the sum is 49.

The square root of 143195989 is about 11966.4526489683. The cubic root of 143195989 is about 523.1709460969.

The spelling of 143195989 in words is "one hundred forty-three million, one hundred ninety-five thousand, nine hundred eighty-nine".