1740668161 has 4 divisors (see below), whose sum is σ = 1783123524. Its totient is φ = 1698212800.

The previous prime is 1740668119. The next prime is 1740668177. The reversal of 1740668161 is 1618660471.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1618660471 = 709 ⋅2283019.

It can be written as a sum of positive squares in 2 ways, for example, as 33408400 + 1707259761 = 5780^2 + 41319^2 .

It is a cyclic number.

It is not a de Polignac number, because 1740668161 - 2¹³ = 1740659969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1740668101) 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, 21227620 + ... + 21227701.

It is an arithmetic number, because the mean of its divisors is an integer number (445780881).

Almost surely, 2^1740668161 is an apocalyptic number.

It is an amenable number.

1740668161 is a deficient number, since it is larger than the sum of its proper divisors (42455363).

1740668161 is an equidigital number, since it uses as much as digits as its factorization.

1740668161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42455362.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1740668161 is about 41721.3154274886. The cubic root of 1740668161 is about 1202.9253076936.

The spelling of 1740668161 in words is "one billion, seven hundred forty million, six hundred sixty-eight thousand, one hundred sixty-one".