174640849 has 2 divisors, whose sum is σ = 174640850. Its totient is φ = 174640848.

The previous prime is 174640811. The next prime is 174640859. The reversal of 174640849 is 948046471.

174640849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174636225 + 4624 = 13215^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 174640849 - 2¹¹ = 174638801 is a prime.

It is a super-2 number, since 2×174640849² = 60998852278881602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (174640859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87320424 + 87320425.

It is an arithmetic number, because the mean of its divisors is an integer number (87320425).

Almost surely, 2^174640849 is an apocalyptic number.

It is an amenable number.

174640849 is a deficient number, since it is larger than the sum of its proper divisors (1).

174640849 is an equidigital number, since it uses as much as digits as its factorization.

174640849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 174640849 is about 13215.1749515472. The cubic root of 174640849 is about 558.9615630203.

The spelling of 174640849 in words is "one hundred seventy-four million, six hundred forty thousand, eight hundred forty-nine".