738745509 has 8 divisors (see below), whose sum is σ = 985119840. Its totient is φ = 492434096.

The previous prime is 738745499. The next prime is 738745541. The reversal of 738745509 is 905547837.

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 738745509 - 2⁵ = 738745477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (738745559) 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, 35614 + ... + 52400.

It is an arithmetic number, because the mean of its divisors is an integer number (123139980).

Almost surely, 2^738745509 is an apocalyptic number.

It is an amenable number.

738745509 is a deficient number, since it is larger than the sum of its proper divisors (246374331).

738745509 is a wasteful number, since it uses less digits than its factorization.

738745509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31459.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 738745509 is about 27179.8732337000. The cubic root of 738745509 is about 903.9927578746.

The spelling of 738745509 in words is "seven hundred thirty-eight million, seven hundred forty-five thousand, five hundred nine".