1655441238 has 64 divisors (see below), whose sum is σ = 3849265152. Its totient is φ = 469608480.

The previous prime is 1655441231. The next prime is 1655441239. The reversal of 1655441238 is 8321445561.

It is a junction number, because it is equal to n+sod(n) for n = 1655441196 and 1655441205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655441231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59745 + ... + 82947.

It is an arithmetic number, because the mean of its divisors is an integer number (60144768).

Almost surely, 2^1655441238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655441238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924632576).

1655441238 is an abundant number, since it is smaller than the sum of its proper divisors (2193823914).

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

1655441238 is a wasteful number, since it uses less digits than its factorization.

1655441238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23289.

The product of its digits is 115200, while the sum is 39.

The square root of 1655441238 is about 40687.1139060022. The cubic root of 1655441238 is about 1182.9632594967.

Adding to 1655441238 its reverse (8321445561), we get a palindrome (9976886799).

The spelling of 1655441238 in words is "one billion, six hundred fifty-five million, four hundred forty-one thousand, two hundred thirty-eight".