1989248401 has 8 divisors (see below), whose sum is σ = 2274393600. Its totient is φ = 1704344928.

The previous prime is 1989248381. The next prime is 1989248407. The reversal of 1989248401 is 1048429891.

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 1989248401 - 2⁷ = 1989248273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1989248407) 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, 42436 + ... + 76021.

It is an arithmetic number, because the mean of its divisors is an integer number (284299200).

Almost surely, 2^1989248401 is an apocalyptic number.

It is an amenable number.

1989248401 is a deficient number, since it is larger than the sum of its proper divisors (285145199).

1989248401 is a wasteful number, since it uses less digits than its factorization.

1989248401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120863.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 1989248401 is about 44600.9910315903. The cubic root of 1989248401 is about 1257.6592978149.

The spelling of 1989248401 in words is "one billion, nine hundred eighty-nine million, two hundred forty-eight thousand, four hundred one".