1613164243 has 2 divisors, whose sum is σ = 1613164244. Its totient is φ = 1613164242.

The previous prime is 1613164213. The next prime is 1613164313. The reversal of 1613164243 is 3424613161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1613164243 - 2²¹ = 1611067091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613164213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806582121 + 806582122.

It is an arithmetic number, because the mean of its divisors is an integer number (806582122).

Almost surely, 2^1613164243 is an apocalyptic number.

1613164243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613164243 is an equidigital number, since it uses as much as digits as its factorization.

1613164243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 1613164243 is about 40164.2159515158. The cubic root of 1613164243 is about 1172.8060446499.

The spelling of 1613164243 in words is "one billion, six hundred thirteen million, one hundred sixty-four thousand, two hundred forty-three".