1055318840 has 64 divisors (see below), whose sum is σ = 2426112000. Its totient is φ = 413015680.

The previous prime is 1055318837. The next prime is 1055318861. The reversal of 1055318840 is 488135501.

It is a super-2 number, since 2×1055318840² = 2227395708117891200, 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 1055318840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563105 + ... + 564975.

It is an arithmetic number, because the mean of its divisors is an integer number (37908000).

Almost surely, 2^1055318840 is an apocalyptic number.

1055318840 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 1055318840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1213056000).

1055318840 is an abundant number, since it is smaller than the sum of its proper divisors (1370793160).

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

1055318840 is a wasteful number, since it uses less digits than its factorization.

1055318840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1055318840 is about 32485.6713028991. The cubic root of 1055318840 is about 1018.1096733147.

The spelling of 1055318840 in words is "one billion, fifty-five million, three hundred eighteen thousand, eight hundred forty".