103638541 has 2 divisors, whose sum is σ = 103638542. Its totient is φ = 103638540.

The previous prime is 103638527. The next prime is 103638571. The reversal of 103638541 is 145836301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102941316 + 697225 = 10146^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 103638541 - 2⁷ = 103638413 is a prime.

It is a super-3 number, since 3×103638541³ (a number of 25 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103638571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51819270 + 51819271.

It is an arithmetic number, because the mean of its divisors is an integer number (51819271).

Almost surely, 2^103638541 is an apocalyptic number.

It is an amenable number.

103638541 is a deficient number, since it is larger than the sum of its proper divisors (1).

103638541 is an equidigital number, since it uses as much as digits as its factorization.

103638541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 103638541 is about 10180.3016163570. The cubic root of 103638541 is about 469.7214903444.

The spelling of 103638541 in words is "one hundred three million, six hundred thirty-eight thousand, five hundred forty-one".