2055909402 has 48 divisors (see below), whose sum is σ = 4696997760. Its totient is φ = 648115776.

The previous prime is 2055909389. The next prime is 2055909431. The reversal of 2055909402 is 2049095502.

It is a happy number.

2055909402 is a `hidden beast` number, since 20 + 5 + 590 + 9 + 40 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206143 + ... + 215885.

It is an arithmetic number, because the mean of its divisors is an integer number (97854120).

Almost surely, 2^2055909402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2055909402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2348498880).

2055909402 is an abundant number, since it is smaller than the sum of its proper divisors (2641088358).

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

2055909402 is a wasteful number, since it uses less digits than its factorization.

2055909402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10387 (or 10384 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 2055909402 is about 45342.1371573948. The cubic root of 2055909402 is about 1271.5535583214.

The spelling of 2055909402 in words is "two billion, fifty-five million, nine hundred nine thousand, four hundred two".