1055619900 has 108 divisors (see below), whose sum is σ = 3385854472. Its totient is φ = 274942080.

The previous prime is 1055619899. The next prime is 1055619959. The reversal of 1055619900 is 99165501.

1055619900 is a `hidden beast` number, since 1 + 0 + 5 + 561 + 9 + 90 + 0 = 666.

It is a super-2 number, since 2×1055619900² = 2228666746552020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25062 + ... + 52338.

Almost surely, 2^1055619900 is an apocalyptic number.

1055619900 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 1055619900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692927236).

1055619900 is an abundant number, since it is smaller than the sum of its proper divisors (2330234572).

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

1055619900 is a wasteful number, since it uses less digits than its factorization.

1055619900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27340 (or 27330 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 1055619900 is about 32490.3047077124. The cubic root of 1055619900 is about 1018.2064791153.

The spelling of 1055619900 in words is "one billion, fifty-five million, six hundred nineteen thousand, nine hundred".