1642019479 has 2 divisors, whose sum is σ = 1642019480. Its totient is φ = 1642019478.

The previous prime is 1642019437. The next prime is 1642019521. The reversal of 1642019479 is 9749102461.

It is a balanced prime because it is at equal distance from previous prime (1642019437) and next prime (1642019521).

It is a cyclic number.

It is not a de Polignac number, because 1642019479 - 2¹¹ = 1642017431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642019419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821009739 + 821009740.

It is an arithmetic number, because the mean of its divisors is an integer number (821009740).

Almost surely, 2^1642019479 is an apocalyptic number.

1642019479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642019479 is an equidigital number, since it uses as much as digits as its factorization.

1642019479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1642019479 is about 40521.8395312947. The cubic root of 1642019479 is about 1179.7575579191.

The spelling of 1642019479 in words is "one billion, six hundred forty-two million, nineteen thousand, four hundred seventy-nine".