274369981 has 4 divisors (see below), whose sum is σ = 274981500. Its totient is φ = 273758464.

The previous prime is 274369961. The next prime is 274369993. The reversal of 274369981 is 189963472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197964900 + 76405081 = 14070^2 + 8741^2 .

It is a cyclic number.

It is not a de Polignac number, because 274369981 - 2²⁷ = 140152253 is a prime.

It is a super-2 number, since 2×274369981² = 150557772947880722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274369951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305086 + ... + 305983.

It is an arithmetic number, because the mean of its divisors is an integer number (68745375).

Almost surely, 2^274369981 is an apocalyptic number.

It is an amenable number.

274369981 is a deficient number, since it is larger than the sum of its proper divisors (611519).

274369981 is an equidigital number, since it uses as much as digits as its factorization.

274369981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611518.

The product of its digits is 653184, while the sum is 49.

The square root of 274369981 is about 16564.1172719828. The cubic root of 274369981 is about 649.7987392676.

The spelling of 274369981 in words is "two hundred seventy-four million, three hundred sixty-nine thousand, nine hundred eighty-one".