1989103401 has 6 divisors (see below), whose sum is σ = 2873149370. Its totient is φ = 1326068928.

The previous prime is 1989103399. The next prime is 1989103421. The reversal of 1989103401 is 1043019891.

It can be written as a sum of positive squares in only one way, i.e., 1988714025 + 389376 = 44595^2 + 624^2 .

It is not a de Polignac number, because 1989103401 - 2¹ = 1989103399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1989103421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110505736 + ... + 110505753.

Almost surely, 2^1989103401 is an apocalyptic number.

It is an amenable number.

1989103401 is a deficient number, since it is larger than the sum of its proper divisors (884045969).

1989103401 is a wasteful number, since it uses less digits than its factorization.

1989103401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221011495 (or 221011492 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1989103401 is about 44599.3654775491. The cubic root of 1989103401 is about 1257.6287393672.

The spelling of 1989103401 in words is "one billion, nine hundred eighty-nine million, one hundred three thousand, four hundred one".