38155105 has 4 divisors (see below), whose sum is σ = 45786132. Its totient is φ = 30524080.

The previous prime is 38155087. The next prime is 38155109. The reversal of 38155105 is 50155183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50155183 = 13 ⋅3858091.

It can be written as a sum of positive squares in 2 ways, for example, as 24137569 + 14017536 = 4913^2 + 3744^2 .

It is not a de Polignac number, because 38155105 - 2⁹ = 38154593 is a prime.

It is a super-2 number, since 2×38155105² = 2911624075122050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38155109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3815506 + ... + 3815515.

It is an arithmetic number, because the mean of its divisors is an integer number (11446533).

Almost surely, 2^38155105 is an apocalyptic number.

It is an amenable number.

38155105 is a deficient number, since it is larger than the sum of its proper divisors (7631027).

38155105 is an equidigital number, since it uses as much as digits as its factorization.

38155105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631026.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 38155105 is about 6176.9818681942. The cubic root of 38155105 is about 336.6543400817.

The spelling of 38155105 in words is "thirty-eight million, one hundred fifty-five thousand, one hundred five".