1618958329 has 2 divisors, whose sum is σ = 1618958330. Its totient is φ = 1618958328.

The previous prime is 1618958317. The next prime is 1618958357. The reversal of 1618958329 is 9238598161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1395396025 + 223562304 = 37355^2 + 14952^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618958329 - 2¹¹ = 1618956281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1618958359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809479164 + 809479165.

It is an arithmetic number, because the mean of its divisors is an integer number (809479165).

Almost surely, 2^1618958329 is an apocalyptic number.

It is an amenable number.

1618958329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618958329 is an equidigital number, since it uses as much as digits as its factorization.

1618958329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 52.

The square root of 1618958329 is about 40236.2812521237. The cubic root of 1618958329 is about 1174.2085097294.

The spelling of 1618958329 in words is "one billion, six hundred eighteen million, nine hundred fifty-eight thousand, three hundred twenty-nine".