1605956941 has 4 divisors (see below), whose sum is σ = 1606185792. Its totient is φ = 1605728092.

The previous prime is 1605956897. The next prime is 1605956977. The reversal of 1605956941 is 1496595061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1605956941 - 2¹³ = 1605948749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1605956891 and 1605956900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605956981) 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, 103555 + ... + 118048.

It is an arithmetic number, because the mean of its divisors is an integer number (401546448).

Almost surely, 2^1605956941 is an apocalyptic number.

It is an amenable number.

1605956941 is a deficient number, since it is larger than the sum of its proper divisors (228851).

1605956941 is an equidigital number, since it uses as much as digits as its factorization.

1605956941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228850.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 1605956941 is about 40074.3925842925. The cubic root of 1605956941 is about 1171.0568143894.

The spelling of 1605956941 in words is "one billion, six hundred five million, nine hundred fifty-six thousand, nine hundred forty-one".