38183895649 has 3 divisors (see below), whose sum is σ = 38184091057. Its totient is φ = 38183700242.

The previous prime is 38183895647. The next prime is 38183895677. The reversal of 38183895649 is 94659838183.

The square root of 38183895649 is 195407.

It is a perfect power (a square), and thus also a powerful 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 is not a de Polignac number, because 38183895649 - 2¹ = 38183895647 is a prime.

It is a super-3 number, since 3×38183895649³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38183895647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 97704 + ... + 293110.

Almost surely, 2^38183895649 is an apocalyptic number.

38183895649 is the 195407-th square number.

38183895649 is the 97704-th centered octagonal number.

It is an amenable number.

38183895649 is a deficient number, since it is larger than the sum of its proper divisors (195408).

38183895649 is an frugal number, since it uses more digits than its factorization.

38183895649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390814 (or 195407 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 64.

Multiplying 38183895649 by its sum of digits (64), we get a square (2443769321536 = 1563256²).

The spelling of 38183895649 in words is "thirty-eight billion, one hundred eighty-three million, eight hundred ninety-five thousand, six hundred forty-nine".