38540155 has 8 divisors (see below), whose sum is σ = 46586592. Its totient is φ = 30606528.

The previous prime is 38540143. The next prime is 38540167. The reversal of 38540155 is 55104583.

38540155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38540143) and next prime (38540167).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38540155 - 2⁷ = 38540027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 27447 + ... + 28816.

It is an arithmetic number, because the mean of its divisors is an integer number (5823324).

Almost surely, 2^38540155 is an apocalyptic number.

38540155 is a deficient number, since it is larger than the sum of its proper divisors (8046437).

38540155 is a wasteful number, since it uses less digits than its factorization.

38540155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56405.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 38540155 is about 6208.0717618275. The cubic root of 38540155 is about 337.7830236814.

The spelling of 38540155 in words is "thirty-eight million, five hundred forty thousand, one hundred fifty-five".