1057698180 has 432 divisors, whose sum is σ = 4299474816. Its totient is φ = 203765760.

The previous prime is 1057698127. The next prime is 1057698181. The reversal of 1057698180 is 818967501.

It is a super-2 number, since 2×1057698180² = 2237450879950624800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057698181) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15786507 + ... + 15786573.

It is an arithmetic number, because the mean of its divisors is an integer number (9952488).

It is a vampire number, since it can be written as 17085 ⋅ 61908 (with its own digits).

Almost surely, 2^1057698180 is an apocalyptic number.

1057698180 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 1057698180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2149737408).

1057698180 is an abundant number, since it is smaller than the sum of its proper divisors (3241776636).

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

1057698180 is a wasteful number, since it uses less digits than its factorization.

1057698180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 1057698180 is about 32522.2720608509. The cubic root of 1057698180 is about 1018.8742481854.

The spelling of 1057698180 in words is "one billion, fifty-seven million, six hundred ninety-eight thousand, one hundred eighty".