38842273775449 has 3 divisors (see below), whose sum is σ = 38842280007807. Its totient is φ = 38842267543092.

The previous prime is 38842273775447. The next prime is 38842273775489. The reversal of 38842273775449 is 94457737224883.

The square root of 38842273775449 is 6232357.

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 can be written as a sum of positive squares in only one way, i.e., 38535725521225 + 306548254224 = 6207715^2 + 553668^2 .

It is not a de Polignac number, because 38842273775449 - 2¹ = 38842273775447 is a prime.

It is a super-2 number, since 2×38842273775449² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38842273775447) 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, 3116179 + ... + 9348535.

It is an arithmetic number, because the mean of its divisors is an integer number (12947426669269).

Almost surely, 2^{38842273775449} is an apocalyptic number.

38842273775449 is the 6232357-th square number.

38842273775449 is the 3116179-th centered octagonal number.

It is an amenable number.

38842273775449 is a deficient number, since it is larger than the sum of its proper divisors (6232358).

38842273775449 is an frugal number, since it uses more digits than its factorization.

38842273775449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12464714 (or 6232357 counting only the distinct ones).

The product of its digits is 2275983360, while the sum is 73.

The spelling of 38842273775449 in words is "thirty-eight trillion, eight hundred forty-two billion, two hundred seventy-three million, seven hundred seventy-five thousand, four hundred forty-nine".