274983781 has 4 divisors (see below), whose sum is σ = 278856864. Its totient is φ = 271110700.

The previous prime is 274983767. The next prime is 274983809. The reversal of 274983781 is 187389472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 274983781 - 2⁵ = 274983749 is a prime.

It is a super-2 number, since 2×274983781² = 151232159626111922, 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 (274983881) 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, 1936435 + ... + 1936576.

It is an arithmetic number, because the mean of its divisors is an integer number (69714216).

Almost surely, 2^274983781 is an apocalyptic number.

It is an amenable number.

274983781 is a deficient number, since it is larger than the sum of its proper divisors (3873083).

274983781 is an equidigital number, since it uses as much as digits as its factorization.

274983781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873082.

The product of its digits is 677376, while the sum is 49.

The square root of 274983781 is about 16582.6349233166. The cubic root of 274983781 is about 650.2829387545.

The spelling of 274983781 in words is "two hundred seventy-four million, nine hundred eighty-three thousand, seven hundred eighty-one".