38738729069 has 4 divisors (see below), whose sum is σ = 38739133020. Its totient is φ = 38738325120.

The previous prime is 38738729027. The next prime is 38738729093. The reversal of 38738729069 is 96092783783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9518929225 + 29219799844 = 97565^2 + 170938^2 .

It is a cyclic number.

It is not a de Polignac number, because 38738729069 - 2¹⁶ = 38738663533 is a prime.

It is a super-2 number, since 2×38738729069² (a number of 22 digits) 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 (38738789069) 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, 32987 + ... + 280295.

It is an arithmetic number, because the mean of its divisors is an integer number (9684783255).

Almost surely, 2^38738729069 is an apocalyptic number.

It is an amenable number.

38738729069 is a deficient number, since it is larger than the sum of its proper divisors (403951).

38738729069 is a wasteful number, since it uses less digits than its factorization.

38738729069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403950.

The product of its (nonzero) digits is 27433728, while the sum is 62.

The spelling of 38738729069 in words is "thirty-eight billion, seven hundred thirty-eight million, seven hundred twenty-nine thousand, sixty-nine".