1989325407 has 16 divisors (see below), whose sum is σ = 2769285888. Its totient is φ = 1267854720.

The previous prime is 1989325399. The next prime is 1989325433. The reversal of 1989325407 is 7045239891.

It is not a de Polignac number, because 1989325407 - 2³ = 1989325399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989320407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136807 + ... + 150647.

It is an arithmetic number, because the mean of its divisors is an integer number (173080368).

Almost surely, 2^1989325407 is an apocalyptic number.

1989325407 is a deficient number, since it is larger than the sum of its proper divisors (779960481).

1989325407 is a wasteful number, since it uses less digits than its factorization.

1989325407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15950.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1989325407 is about 44601.8543000176. The cubic root of 1989325407 is about 1257.6755260651.

The spelling of 1989325407 in words is "one billion, nine hundred eighty-nine million, three hundred twenty-five thousand, four hundred seven".