274138155 has 16 divisors (see below), whose sum is σ = 487356960. Its totient is φ = 146206944.

The previous prime is 274138129. The next prime is 274138181. The reversal of 274138155 is 551831472.

274138155 is a `hidden beast` number, since 274 + 1 + 381 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (274138129) and next prime (274138181).

It is not a de Polignac number, because 274138155 - 2⁷ = 274138027 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1015192 + ... + 1015461.

It is an arithmetic number, because the mean of its divisors is an integer number (30459810).

Almost surely, 2^274138155 is an apocalyptic number.

274138155 is a deficient number, since it is larger than the sum of its proper divisors (213218805).

274138155 is a wasteful number, since it uses less digits than its factorization.

274138155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030667 (or 2030661 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 274138155 is about 16557.1179557313. The cubic root of 274138155 is about 649.6156741849.

The spelling of 274138155 in words is "two hundred seventy-four million, one hundred thirty-eight thousand, one hundred fifty-five".