409195381 has 32 divisors (see below), whose sum is σ = 516792320. Its totient is φ = 316094400.

The previous prime is 409195379. The next prime is 409195387. The reversal of 409195381 is 183591904.

It is a cyclic number.

It is not a de Polignac number, because 409195381 - 2¹ = 409195379 is a prime.

It is a super-2 number, since 2×409195381² = 334881719663470322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409195387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250690 + ... + 252316.

It is an arithmetic number, because the mean of its divisors is an integer number (16149760).

Almost surely, 2^409195381 is an apocalyptic number.

It is an amenable number.

409195381 is a deficient number, since it is larger than the sum of its proper divisors (107596939).

409195381 is a wasteful number, since it uses less digits than its factorization.

409195381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 409195381 is about 20228.5783237478. The cubic root of 409195381 is about 742.4095917916.

The spelling of 409195381 in words is "four hundred nine million, one hundred ninety-five thousand, three hundred eighty-one".