1641827258 has 16 divisors (see below), whose sum is σ = 2616523560. Its totient is φ = 769982976.

The previous prime is 1641827251. The next prime is 1641827293. The reversal of 1641827258 is 8527281461.

It can be written as a sum of positive squares in 4 ways, for example, as 1444228009 + 197599249 = 38003^2 + 14057^2 .

It is a super-2 number, since 2×1641827258² = 5391193490223597128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641827251) 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 7 ways as a sum of consecutive naturals, for example, 72443 + ... + 92366.

Almost surely, 2^1641827258 is an apocalyptic number.

1641827258 is a deficient number, since it is larger than the sum of its proper divisors (974696302).

1641827258 is a wasteful number, since it uses less digits than its factorization.

1641827258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165121.

The product of its digits is 215040, while the sum is 44.

The square root of 1641827258 is about 40519.4676421100. The cubic root of 1641827258 is about 1179.7115204979.

The spelling of 1641827258 in words is "one billion, six hundred forty-one million, eight hundred twenty-seven thousand, two hundred fifty-eight".