1618102973 has 2 divisors, whose sum is σ = 1618102974. Its totient is φ = 1618102972.

The previous prime is 1618102963. The next prime is 1618103009. The reversal of 1618102973 is 3792018161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1440733849 + 177369124 = 37957^2 + 13318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618102973 - 2²² = 1613908669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1618102963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809051486 + 809051487.

It is an arithmetic number, because the mean of its divisors is an integer number (809051487).

Almost surely, 2^1618102973 is an apocalyptic number.

It is an amenable number.

1618102973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618102973 is an equidigital number, since it uses as much as digits as its factorization.

1618102973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1618102973 is about 40225.6506846067. The cubic root of 1618102973 is about 1174.0016805995.

The spelling of 1618102973 in words is "one billion, six hundred eighteen million, one hundred two thousand, nine hundred seventy-three".