1611403741 has 2 divisors, whose sum is σ = 1611403742. Its totient is φ = 1611403740.

The previous prime is 1611403733. The next prime is 1611403753. The reversal of 1611403741 is 1473041161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1105828516 + 505575225 = 33254^2 + 22485^2 .

It is an emirp because it is prime and its reverse (1473041161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1611403741 - 2³ = 1611403733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1611403721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805701870 + 805701871.

It is an arithmetic number, because the mean of its divisors is an integer number (805701871).

Almost surely, 2^1611403741 is an apocalyptic number.

It is an amenable number.

1611403741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611403741 is an equidigital number, since it uses as much as digits as its factorization.

1611403741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1611403741 is about 40142.2936688974. The cubic root of 1611403741 is about 1172.3792480699.

The spelling of 1611403741 in words is "one billion, six hundred eleven million, four hundred three thousand, seven hundred forty-one".