2055691900 has 36 divisors (see below), whose sum is σ = 4506860848. Its totient is φ = 813795840.

The previous prime is 2055691879. The next prime is 2055691919. The reversal of 2055691900 is 91965502.

It is a super-2 number, since 2×2055691900² = 8451738375451220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2055691900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96264 + ... + 115663.

Almost surely, 2^2055691900 is an apocalyptic number.

2055691900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2055691900 is an abundant number, since it is smaller than the sum of its proper divisors (2451168948).

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

2055691900 is a wasteful number, since it uses less digits than its factorization.

2055691900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212038 (or 212031 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 2055691900 is about 45339.7386406230. The cubic root of 2055691900 is about 1271.5087160089.

The spelling of 2055691900 in words is "two billion, fifty-five million, six hundred ninety-one thousand, nine hundred".