274997818 has 4 divisors (see below), whose sum is σ = 412496730. Its totient is φ = 137498908.

The previous prime is 274997809. The next prime is 274997837. The reversal of 274997818 is 818799472.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 227014489 + 47983329 = 15067^2 + 6927^2 .

It is a super-2 number, since 2×274997818² = 151247599809522248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68749453 + ... + 68749456.

Almost surely, 2^274997818 is an apocalyptic number.

274997818 is a deficient number, since it is larger than the sum of its proper divisors (137498912).

274997818 is a wasteful number, since it uses less digits than its factorization.

274997818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137498911.

The product of its digits is 2032128, while the sum is 55.

The square root of 274997818 is about 16583.0581618711. The cubic root of 274997818 is about 650.2940034875.

The spelling of 274997818 in words is "two hundred seventy-four million, nine hundred ninety-seven thousand, eight hundred eighteen".