1642101793 has 4 divisors (see below), whose sum is σ = 1642595760. Its totient is φ = 1641607828.

The previous prime is 1642101763. The next prime is 1642101827. The reversal of 1642101793 is 3971012461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642101793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642101743) 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 in 3 ways as a sum of consecutive naturals, for example, 241963 + ... + 248656.

It is an arithmetic number, because the mean of its divisors is an integer number (410648940).

Almost surely, 2^1642101793 is an apocalyptic number.

It is an amenable number.

1642101793 is a deficient number, since it is larger than the sum of its proper divisors (493967).

1642101793 is an equidigital number, since it uses as much as digits as its factorization.

1642101793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493966.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1642101793 is about 40522.8551930883. The cubic root of 1642101793 is about 1179.7772712339. Note that the first 3 decimals are identical.

The spelling of 1642101793 in words is "one billion, six hundred forty-two million, one hundred one thousand, seven hundred ninety-three".