1642358867 has 2 divisors, whose sum is σ = 1642358868. Its totient is φ = 1642358866.

The previous prime is 1642358857. The next prime is 1642358897. The reversal of 1642358867 is 7688532461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642358867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1642358857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821179433 + 821179434.

It is an arithmetic number, because the mean of its divisors is an integer number (821179434).

Almost surely, 2^1642358867 is an apocalyptic number.

1642358867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642358867 is an equidigital number, since it uses as much as digits as its factorization.

1642358867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 50.

The square root of 1642358867 is about 40526.0270320198. The cubic root of 1642358867 is about 1179.8388334420.

The spelling of 1642358867 in words is "one billion, six hundred forty-two million, three hundred fifty-eight thousand, eight hundred sixty-seven".