1642659023 has 2 divisors, whose sum is σ = 1642659024. Its totient is φ = 1642659022.

The previous prime is 1642658989. The next prime is 1642659077. The reversal of 1642659023 is 3209562461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1642659023 - 2⁶ = 1642658959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642659223) 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, 821329511 + 821329512.

It is an arithmetic number, because the mean of its divisors is an integer number (821329512).

Almost surely, 2^1642659023 is an apocalyptic number.

1642659023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642659023 is an equidigital number, since it uses as much as digits as its factorization.

1642659023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 1642659023 is about 40529.7301125976. The cubic root of 1642659023 is about 1179.9107044848.

The spelling of 1642659023 in words is "one billion, six hundred forty-two million, six hundred fifty-nine thousand, twenty-three".