1621318314 has 32 divisors (see below), whose sum is σ = 4042768896. Its totient is φ = 421121520.

The previous prime is 1621318261. The next prime is 1621318333. The reversal of 1621318314 is 4138131261.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1754212 + ... + 1755135.

It is an arithmetic number, because the mean of its divisors is an integer number (126336528).

Almost surely, 2^1621318314 is an apocalyptic number.

1621318314 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1621318314 is an abundant number, since it is smaller than the sum of its proper divisors (2421450582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1621318314 is a wasteful number, since it uses less digits than its factorization.

1621318314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509370.

The product of its digits is 3456, while the sum is 30.

The square root of 1621318314 is about 40265.5971519112. The cubic root of 1621318314 is about 1174.7787877508.

Adding to 1621318314 its reverse (4138131261), we get a palindrome (5759449575).

The spelling of 1621318314 in words is "one billion, six hundred twenty-one million, three hundred eighteen thousand, three hundred fourteen".