1642215338 has 8 divisors (see below), whose sum is σ = 2469823680. Its totient is φ = 818940780.

The previous prime is 1642215331. The next prime is 1642215371. The reversal of 1642215338 is 8335122461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1642215298 and 1642215307.

It is not an unprimeable number, because it can be changed into a prime (1642215331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082498 + ... + 1084013.

It is an arithmetic number, because the mean of its divisors is an integer number (308727960).

Almost surely, 2^1642215338 is an apocalyptic number.

1642215338 is a deficient number, since it is larger than the sum of its proper divisors (827608342).

1642215338 is a wasteful number, since it uses less digits than its factorization.

1642215338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166892.

The product of its digits is 34560, while the sum is 35.

The square root of 1642215338 is about 40524.2561683740. The cubic root of 1642215338 is about 1179.8044629552.

Adding to 1642215338 its reverse (8335122461), we get a palindrome (9977337799).

The spelling of 1642215338 in words is "one billion, six hundred forty-two million, two hundred fifteen thousand, three hundred thirty-eight".