1955339388 has 144 divisors (see below), whose sum is σ = 5566107456. Its totient is φ = 575477760.

The previous prime is 1955339369. The next prime is 1955339459. The reversal of 1955339388 is 8839335591.

It is a happy number.

1955339388 is a `hidden beast` number, since 1 + 9 + 553 + 3 + 9 + 3 + 88 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 744718 + ... + 747338.

It is an arithmetic number, because the mean of its divisors is an integer number (38653524).

Almost surely, 2^1955339388 is an apocalyptic number.

1955339388 is a gapful number since it is divisible by the number (18) 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 1955339388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2783053728).

1955339388 is an abundant number, since it is smaller than the sum of its proper divisors (3610768068).

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

1955339388 is a wasteful number, since it uses less digits than its factorization.

1955339388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724 (or 2719 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 1955339388 is about 44219.2196674704. The cubic root of 1955339388 is about 1250.4722243542.

The spelling of 1955339388 in words is "one billion, nine hundred fifty-five million, three hundred thirty-nine thousand, three hundred eighty-eight".