3738279172369 has 9 divisors (see below), whose sum is σ = 4348626209787. Its totient is φ = 3204227689824.

The previous prime is 3738279172367. The next prime is 3738279172379. The reversal of 3738279172369 is 9632719728373.

The square root of 3738279172369 is 1933463.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 398303618769 + 3339975553600 = 631113^2 + 1827560^2 .

It is not a de Polignac number, because 3738279172369 - 2¹ = 3738279172367 is a prime.

It is a super-2 number, since 2×3738279172369² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3738279172367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13396137 + ... + 13672345.

Almost surely, 2^{3738279172369} is an apocalyptic number.

3738279172369 is the 1933463-rd square number.

3738279172369 is the 966732-nd centered octagonal number.

It is an amenable number.

3738279172369 is a deficient number, since it is larger than the sum of its proper divisors (610347037418).

3738279172369 is an frugal number, since it uses more digits than its factorization.

3738279172369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552432 (or 276216 counting only the distinct ones).

The product of its digits is 144027072, while the sum is 67.

The spelling of 3738279172369 in words is "three trillion, seven hundred thirty-eight billion, two hundred seventy-nine million, one hundred seventy-two thousand, three hundred sixty-nine".