381449245 has 8 divisors (see below), whose sum is σ = 458883000. Its totient is φ = 304396800.

The previous prime is 381449239. The next prime is 381449251. The reversal of 381449245 is 542944183.

It is an interprime number because it is at equal distance from previous prime (381449239) and next prime (381449251).

It can be written as a sum of positive squares in 4 ways, for example, as 264420121 + 117029124 = 16261^2 + 10818^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381449245 - 2¹¹ = 381447197 is a prime.

It is a super-2 number, since 2×381449245² = 291007053022140050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 381449198 and 381449207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93120 + ... + 97129.

It is an arithmetic number, because the mean of its divisors is an integer number (57360375).

Almost surely, 2^381449245 is an apocalyptic number.

It is an amenable number.

381449245 is a deficient number, since it is larger than the sum of its proper divisors (77433755).

381449245 is a wasteful number, since it uses less digits than its factorization.

381449245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190655.

The product of its digits is 138240, while the sum is 40.

The square root of 381449245 is about 19530.7256649619. The cubic root of 381449245 is about 725.2352752064.

The spelling of 381449245 in words is "three hundred eighty-one million, four hundred forty-nine thousand, two hundred forty-five".