1613444141 has 2 divisors, whose sum is σ = 1613444142. Its totient is φ = 1613444140.

The previous prime is 1613444137. The next prime is 1613444159. The reversal of 1613444141 is 1414443161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1476788041 + 136656100 = 38429^2 + 11690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613444141 - 2² = 1613444137 is a prime.

It is a super-2 number, since 2×1613444141² = 5206403992254455762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1613444111) 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 as a sum of consecutive naturals, namely, 806722070 + 806722071.

It is an arithmetic number, because the mean of its divisors is an integer number (806722071).

It is a self-describing number.

Almost surely, 2^1613444141 is an apocalyptic number.

It is an amenable number.

1613444141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613444141 is an equidigital number, since it uses as much as digits as its factorization.

1613444141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 1613444141 is about 40167.7002204508. The cubic root of 1613444141 is about 1172.8738714038.

The spelling of 1613444141 in words is "one billion, six hundred thirteen million, four hundred forty-four thousand, one hundred forty-one".