738281989 has 4 divisors (see below), whose sum is σ = 739452640. Its totient is φ = 737111340.

The previous prime is 738281983. The next prime is 738282011. The reversal of 738281989 is 989182837.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 738281989 - 2¹³ = 738273797 is a prime.

It is a super-2 number, since 2×738281989² = 1090120590563592242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (738281983) 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, 584379 + ... + 585640.

It is an arithmetic number, because the mean of its divisors is an integer number (184863160).

Almost surely, 2^738281989 is an apocalyptic number.

It is an amenable number.

738281989 is a deficient number, since it is larger than the sum of its proper divisors (1170651).

738281989 is a wasteful number, since it uses less digits than its factorization.

738281989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170650.

The product of its digits is 1741824, while the sum is 55.

The square root of 738281989 is about 27171.3449979938. The cubic root of 738281989 is about 903.8036506267.

The spelling of 738281989 in words is "seven hundred thirty-eight million, two hundred eighty-one thousand, nine hundred eighty-nine".