1613709242 has 16 divisors (see below), whose sum is σ = 2481677352. Its totient is φ = 786516480.

The previous prime is 1613709239. The next prime is 1613709257. The reversal of 1613709242 is 2429073161.

It is a Cunningham number, because it is equal to 40171²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1608731881 + 4977361 = 40109^2 + 2231^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98768 + ... + 113940.

Almost surely, 2^1613709242 is an apocalyptic number.

1613709242 is a deficient number, since it is larger than the sum of its proper divisors (867968110).

1613709242 is a wasteful number, since it uses less digits than its factorization.

1613709242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16513.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1613709242 is about 40171.0000124468. Note that the first 4 decimals coincide. The cubic root of 1613709242 is about 1172.9381052169.

The spelling of 1613709242 in words is "one billion, six hundred thirteen million, seven hundred nine thousand, two hundred forty-two".