1655930940 has 96 divisors (see below), whose sum is σ = 4972907520. Its totient is φ = 410432256.

The previous prime is 1655930923. The next prime is 1655930971. The reversal of 1655930940 is 490395561.

It is a junction number, because it is equal to n+sod(n) for n = 1655930892 and 1655930901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46717 + ... + 74123.

It is an arithmetic number, because the mean of its divisors is an integer number (51801120).

Almost surely, 2^1655930940 is an apocalyptic number.

1655930940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655930940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2486453760).

1655930940 is an abundant number, since it is smaller than the sum of its proper divisors (3316976580).

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

1655930940 is a wasteful number, since it uses less digits than its factorization.

1655930940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27491 (or 27489 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 1655930940 is about 40693.1313614472. The cubic root of 1655930940 is about 1183.0798935293.

The spelling of 1655930940 in words is "one billion, six hundred fifty-five million, nine hundred thirty thousand, nine hundred forty".