1355620938 has 32 divisors (see below), whose sum is σ = 3099672576. Its totient is φ = 387181488.

The previous prime is 1355620933. The next prime is 1355620939. The reversal of 1355620938 is 8390265531.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1355620938.

It is not an unprimeable number, because it can be changed into a prime (1355620933) 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, 194095 + ... + 200957.

It is an arithmetic number, because the mean of its divisors is an integer number (96864768).

Almost surely, 2^1355620938 is an apocalyptic number.

1355620938 is an abundant number, since it is smaller than the sum of its proper divisors (1744051638).

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

1355620938 is a wasteful number, since it uses less digits than its factorization.

1355620938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1355620938 is about 36818.7579638423. The cubic root of 1355620938 is about 1106.7412302585.

The spelling of 1355620938 in words is "one billion, three hundred fifty-five million, six hundred twenty thousand, nine hundred thirty-eight".