274909245381 has 14 divisors (see below), whose sum is σ = 412175316870. Its totient is φ = 183272829768.

The previous prime is 274909245371. The next prime is 274909245397. The reversal of 274909245381 is 183542909472.

274909245381 is a `hidden beast` number, since 2 + 7 + 490 + 9 + 24 + 53 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 274507884225 + 401361156 = 523935^2 + 20034^2 .

It is not a de Polignac number, because 274909245381 - 2⁵ = 274909245349 is a prime.

It is a super-2 number, since 2×274909245381² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274909245371) 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 13 ways as a sum of consecutive naturals, for example, 188551566 + ... + 188553023.

Almost surely, 2^274909245381 is an apocalyptic number.

It is an amenable number.

274909245381 is a deficient number, since it is larger than the sum of its proper divisors (137266071489).

274909245381 is an frugal number, since it uses more digits than its factorization.

274909245381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377104607 (or 377104592 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 274909245381 in words is "two hundred seventy-four billion, nine hundred nine million, two hundred forty-five thousand, three hundred eighty-one".