1612212541 has 4 divisors (see below), whose sum is σ = 1612326492. Its totient is φ = 1612098592.

The previous prime is 1612212467. The next prime is 1612212551. The reversal of 1612212541 is 1452122161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1557880900 + 54331641 = 39470^2 + 7371^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612212541 - 2¹⁷ = 1612081469 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 (1612212551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32146 + ... + 65251.

It is an arithmetic number, because the mean of its divisors is an integer number (403081623).

Almost surely, 2^1612212541 is an apocalyptic number.

It is an amenable number.

1612212541 is a deficient number, since it is larger than the sum of its proper divisors (113951).

1612212541 is an equidigital number, since it uses as much as digits as its factorization.

1612212541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113950.

The product of its digits is 960, while the sum is 25.

The square root of 1612212541 is about 40152.3665678625. The cubic root of 1612212541 is about 1172.5753631529.

The spelling of 1612212541 in words is "one billion, six hundred twelve million, two hundred twelve thousand, five hundred forty-one".