416261381 has 2 divisors, whose sum is σ = 416261382. Its totient is φ = 416261380.

The previous prime is 416261357. The next prime is 416261387. The reversal of 416261381 is 183162614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407676481 + 8584900 = 20191^2 + 2930^2 .

It is a cyclic number.

It is not a de Polignac number, because 416261381 - 2²² = 412067077 is a prime.

It is a super-2 number, since 2×416261381² = 346547074624054322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (416261387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208130690 + 208130691.

It is an arithmetic number, because the mean of its divisors is an integer number (208130691).

Almost surely, 2^416261381 is an apocalyptic number.

It is an amenable number.

416261381 is a deficient number, since it is larger than the sum of its proper divisors (1).

416261381 is an equidigital number, since it uses as much as digits as its factorization.

416261381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 416261381 is about 20402.4846771171. The cubic root of 416261381 is about 746.6585459851.

The spelling of 416261381 in words is "four hundred sixteen million, two hundred sixty-one thousand, three hundred eighty-one".