1620338695338 has 32 divisors (see below), whose sum is σ = 3535329799872. Its totient is φ = 491005424000.

The previous prime is 1620338695337. The next prime is 1620338695343. The reversal of 1620338695338 is 8335968330261.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1620338695337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9225670 + ... + 9399662.

It is an arithmetic number, because the mean of its divisors is an integer number (110479056246).

Almost surely, 2^{1620338695338} is an apocalyptic number.

1620338695338 is an abundant number, since it is smaller than the sum of its proper divisors (1914991104534).

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

1620338695338 is a wasteful number, since it uses less digits than its factorization.

1620338695338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315110.

The product of its (nonzero) digits is 16796160, while the sum is 57.

The spelling of 1620338695338 in words is "one trillion, six hundred twenty billion, three hundred thirty-eight million, six hundred ninety-five thousand, three hundred thirty-eight".