38692070209 has 9 divisors (see below), whose sum is σ = 41900099619. Its totient is φ = 35713396680.

The previous prime is 38692070191. The next prime is 38692070267. The reversal of 38692070209 is 90207029683.

The square root of 38692070209 is 196703.

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., 5723679025 + 32968391184 = 75655^2 + 181572^2 .

It is not a de Polignac number, because 38692070209 - 2³³ = 30102135617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38692070279) 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, 2549574 + ... + 2564704.

Almost surely, 2^38692070209 is an apocalyptic number.

38692070209 is the 196703-rd square number.

38692070209 is the 98352-nd centered octagonal number.

It is an amenable number.

38692070209 is a deficient number, since it is larger than the sum of its proper divisors (3208029410).

38692070209 is an frugal number, since it uses more digits than its factorization.

38692070209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30288 (or 15144 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 38692070209 in words is "thirty-eight billion, six hundred ninety-two million, seventy thousand, two hundred nine".