1642302638 has 8 divisors (see below), whose sum is σ = 2463668760. Its totient is φ = 821079720.

The previous prime is 1642302631. The next prime is 1642302647. The reversal of 1642302638 is 8362032461.

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 = 1642302598 and 1642302607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642302631) 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, 53 + ... + 57311.

It is an arithmetic number, because the mean of its divisors is an integer number (307958595).

Almost surely, 2^1642302638 is an apocalyptic number.

1642302638 is a deficient number, since it is larger than the sum of its proper divisors (821366122).

1642302638 is a wasteful number, since it uses less digits than its factorization.

1642302638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71602.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1642302638 is about 40525.3332867233. Note that the first 3 decimals coincide. The cubic root of 1642302638 is about 1179.8253686798.

The spelling of 1642302638 in words is "one billion, six hundred forty-two million, three hundred two thousand, six hundred thirty-eight".