381471653 has 4 divisors (see below), whose sum is σ = 403911180. Its totient is φ = 359032128.

The previous prime is 381471637. The next prime is 381471661. The reversal of 381471653 is 356174183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356174183 = 593 ⋅600631.

It can be written as a sum of positive squares in 2 ways, for example, as 267878689 + 113592964 = 16367^2 + 10658^2 .

It is a cyclic number.

It is not a de Polignac number, because 381471653 - 2⁴ = 381471637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381471953) 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 3 ways as a sum of consecutive naturals, for example, 11219738 + ... + 11219771.

It is an arithmetic number, because the mean of its divisors is an integer number (100977795).

Almost surely, 2^381471653 is an apocalyptic number.

It is an amenable number.

381471653 is a deficient number, since it is larger than the sum of its proper divisors (22439527).

381471653 is a wasteful number, since it uses less digits than its factorization.

381471653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22439526.

The product of its digits is 60480, while the sum is 38.

The square root of 381471653 is about 19531.2993167377. The cubic root of 381471653 is about 725.2494760943.

The spelling of 381471653 in words is "three hundred eighty-one million, four hundred seventy-one thousand, six hundred fifty-three".