1642328330 has 16 divisors (see below), whose sum is σ = 2975023080. Its totient is φ = 652746432.

The previous prime is 1642328329. The next prime is 1642328339. The reversal of 1642328330 is 338232461.

It can be written as a sum of positive squares in 4 ways, for example, as 1133870929 + 508457401 = 33673^2 + 22549^2 .

It is not an unprimeable number, because it can be changed into a prime (1642328339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521465 + ... + 524604.

Almost surely, 2^1642328330 is an apocalyptic number.

1642328330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1642328330 is a deficient number, since it is larger than the sum of its proper divisors (1332694750).

1642328330 is a wasteful number, since it uses less digits than its factorization.

1642328330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046233.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1642328330 is about 40525.6502723892. The cubic root of 1642328330 is about 1179.8315210000.

The spelling of 1642328330 in words is "one billion, six hundred forty-two million, three hundred twenty-eight thousand, three hundred thirty".