450205381 has 16 divisors (see below), whose sum is σ = 489153024. Its totient is φ = 413195904.

The previous prime is 450205351. The next prime is 450205387. The reversal of 450205381 is 183502054.

It is a cyclic number.

It is not a de Polignac number, because 450205381 - 2⁷ = 450205253 is a prime.

It is a super-2 number, since 2×450205381² = 405369770162710322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450205387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58500 + ... + 65746.

It is an arithmetic number, because the mean of its divisors is an integer number (30572064).

Almost surely, 2^450205381 is an apocalyptic number.

It is an amenable number.

450205381 is a deficient number, since it is larger than the sum of its proper divisors (38947643).

450205381 is a wasteful number, since it uses less digits than its factorization.

450205381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 450205381 is about 21218.0437599700. The cubic root of 450205381 is about 766.4259964379.

The spelling of 450205381 in words is "four hundred fifty million, two hundred five thousand, three hundred eighty-one".