1338623541 has 6 divisors (see below), whose sum is σ = 1933567350. Its totient is φ = 892415688.

The previous prime is 1338623521. The next prime is 1338623543. The reversal of 1338623541 is 1453268331.

1338623541 is a `hidden beast` number, since 1 + 3 + 386 + 235 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1255284900 + 83338641 = 35430^2 + 9129^2 .

It is not a de Polignac number, because 1338623541 - 2⁶ = 1338623477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1338623496 and 1338623505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338623543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74367966 + ... + 74367983.

It is an arithmetic number, because the mean of its divisors is an integer number (322261225).

Almost surely, 2^1338623541 is an apocalyptic number.

It is an amenable number.

1338623541 is a deficient number, since it is larger than the sum of its proper divisors (594943809).

1338623541 is a wasteful number, since it uses less digits than its factorization.

1338623541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148735955 (or 148735952 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 1338623541 is about 36587.2046076220. The cubic root of 1338623541 is about 1102.0961520862.

The spelling of 1338623541 in words is "one billion, three hundred thirty-eight million, six hundred twenty-three thousand, five hundred forty-one".