1655371441 has 4 divisors (see below), whose sum is σ = 1655773812. Its totient is φ = 1654969072.

The previous prime is 1655371429. The next prime is 1655371463. The reversal of 1655371441 is 1441735561.

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 660284416 + 995087025 = 25696^2 + 31545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655371441 - 2⁹ = 1655370929 is a prime.

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 1655371441.

It is not an unprimeable number, because it can be changed into a prime (1655371741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194950 + ... + 203263.

It is an arithmetic number, because the mean of its divisors is an integer number (413943453).

Almost surely, 2^1655371441 is an apocalyptic number.

It is an amenable number.

1655371441 is a deficient number, since it is larger than the sum of its proper divisors (402371).

1655371441 is an equidigital number, since it uses as much as digits as its factorization.

1655371441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402370.

The product of its digits is 50400, while the sum is 37.

The square root of 1655371441 is about 40686.2561683918. The cubic root of 1655371441 is about 1182.9466338292.

The spelling of 1655371441 in words is "one billion, six hundred fifty-five million, three hundred seventy-one thousand, four hundred forty-one".