1620328814 has 8 divisors (see below), whose sum is σ = 2617454280. Its totient is φ = 747844056.

The previous prime is 1620328813. The next prime is 1620328819. The reversal of 1620328814 is 4188230261.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620328813) 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, 31160144 + ... + 31160195.

It is an arithmetic number, because the mean of its divisors is an integer number (327181785).

Almost surely, 2^1620328814 is an apocalyptic number.

1620328814 is a deficient number, since it is larger than the sum of its proper divisors (997125466).

1620328814 is a wasteful number, since it uses less digits than its factorization.

1620328814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62320354.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1620328814 is about 40253.3081125018. The cubic root of 1620328814 is about 1174.5397476720.

The spelling of 1620328814 in words is "one billion, six hundred twenty million, three hundred twenty-eight thousand, eight hundred fourteen".