1341521605 has 4 divisors (see below), whose sum is σ = 1609825932. Its totient is φ = 1073217280.

The previous prime is 1341521603. The next prime is 1341521639. The reversal of 1341521605 is 5061251431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152720164 + 1188801441 = 12358^2 + 34479^2 .

It is not a de Polignac number, because 1341521605 - 2¹ = 1341521603 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 (1341521603) 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, 134152156 + ... + 134152165.

It is an arithmetic number, because the mean of its divisors is an integer number (402456483).

Almost surely, 2^1341521605 is an apocalyptic number.

It is an amenable number.

1341521605 is a deficient number, since it is larger than the sum of its proper divisors (268304327).

1341521605 is an equidigital number, since it uses as much as digits as its factorization.

1341521605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268304326.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1341521605 is about 36626.7880792187. The cubic root of 1341521605 is about 1102.8909095203.

The spelling of 1341521605 in words is "one billion, three hundred forty-one million, five hundred twenty-one thousand, six hundred five".