1057121716 has 12 divisors (see below), whose sum is σ = 2114243488. Its totient is φ = 453052152.

The previous prime is 1057121713. The next prime is 1057121743. The reversal of 1057121716 is 6171217501.

It is a happy number.

1057121716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

1057121716 is an admirable number.

It is a super-2 number, since 2×1057121716² = 2235012644877569312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057121713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18877146 + ... + 18877201.

Almost surely, 2^1057121716 is an apocalyptic number.

It is an amenable number.

1057121716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1057121716 is a wasteful number, since it uses less digits than its factorization.

1057121716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37754358 (or 37754356 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 31.

The square root of 1057121716 is about 32513.4082495207. The cubic root of 1057121716 is about 1018.6891131212.

The spelling of 1057121716 in words is "one billion, fifty-seven million, one hundred twenty-one thousand, seven hundred sixteen".