1646330242 has 8 divisors (see below), whose sum is σ = 2476117116. Its totient is φ = 820957872.

The previous prime is 1646330219. The next prime is 1646330249. The reversal of 1646330242 is 2420336461.

It can be written as a sum of positive squares in 2 ways, for example, as 1615316481 + 31013761 = 40191^2 + 5569^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1646330249) 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, 1102693 + ... + 1104184.

Almost surely, 2^1646330242 is an apocalyptic number.

1646330242 is a deficient number, since it is larger than the sum of its proper divisors (829786874).

1646330242 is a wasteful number, since it uses less digits than its factorization.

1646330242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207252.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 1646330242 is about 40574.9952803448. The cubic root of 1646330242 is about 1180.7890542663.

The spelling of 1646330242 in words is "one billion, six hundred forty-six million, three hundred thirty thousand, two hundred forty-two".