736138789 has 8 divisors (see below), whose sum is σ = 758460632. Its totient is φ = 714147840.

The previous prime is 736138771. The next prime is 736138829. The reversal of 736138789 is 987831637.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51008164 + 685130625 = 7142^2 + 26175^2 .

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 736138789 - 2¹⁷ = 736007717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (736138729) 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, 78204 + ... + 87109.

It is an arithmetic number, because the mean of its divisors is an integer number (94807579).

Almost surely, 2^736138789 is an apocalyptic number.

It is an amenable number.

736138789 is a deficient number, since it is larger than the sum of its proper divisors (22321843).

736138789 is a wasteful number, since it uses less digits than its factorization.

736138789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165447.

The product of its digits is 1524096, while the sum is 52.

The square root of 736138789 is about 27131.8777271312. The cubic root of 736138789 is about 902.9282356252.

The spelling of 736138789 in words is "seven hundred thirty-six million, one hundred thirty-eight thousand, seven hundred eighty-nine".