415681381 has 4 divisors (see below), whose sum is σ = 415808064. Its totient is φ = 415554700.

The previous prime is 415681367. The next prime is 415681393. The reversal of 415681381 is 183186514.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 415681381 - 2¹¹ = 415679333 is a prime.

It is a super-2 number, since 2×415681381² = 345582021020134322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 415681381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415681361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58285 + ... + 65026.

It is an arithmetic number, because the mean of its divisors is an integer number (103952016).

Almost surely, 2^415681381 is an apocalyptic number.

It is an amenable number.

415681381 is a deficient number, since it is larger than the sum of its proper divisors (126683).

415681381 is a wasteful number, since it uses less digits than its factorization.

415681381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126682.

The product of its digits is 23040, while the sum is 37.

The square root of 415681381 is about 20388.2657673476. The cubic root of 415681381 is about 746.3115979145.

The spelling of 415681381 in words is "four hundred fifteen million, six hundred eighty-one thousand, three hundred eighty-one".