1618063939 has 2 divisors, whose sum is σ = 1618063940. Its totient is φ = 1618063938.

The previous prime is 1618063933. The next prime is 1618063957. The reversal of 1618063939 is 9393608161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1618063939 - 2¹⁵ = 1618031171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1618063933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809031969 + 809031970.

It is an arithmetic number, because the mean of its divisors is an integer number (809031970).

Almost surely, 2^1618063939 is an apocalyptic number.

1618063939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618063939 is an equidigital number, since it uses as much as digits as its factorization.

1618063939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 1618063939 is about 40225.1654937553. The cubic root of 1618063939 is about 1173.9922402547.

The spelling of 1618063939 in words is "one billion, six hundred eighteen million, sixty-three thousand, nine hundred thirty-nine".