1057418661 has 8 divisors (see below), whose sum is σ = 1518344800. Its totient is φ = 650719152.

The previous prime is 1057418657. The next prime is 1057418689. The reversal of 1057418661 is 1668147501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1057418661 - 2² = 1057418657 is a prime.

It is a super-2 number, since 2×1057418661² = 2236268449262065842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 27113299 = 1057418661 / (1 + 0 + 5 + 7 + 4 + 1 + 8 + 6 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057418611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13556611 + ... + 13556688.

It is an arithmetic number, because the mean of its divisors is an integer number (189793100).

Almost surely, 2^1057418661 is an apocalyptic number.

It is an amenable number.

1057418661 is a deficient number, since it is larger than the sum of its proper divisors (460926139).

1057418661 is a wasteful number, since it uses less digits than its factorization.

1057418661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27113315.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 1057418661 is about 32517.9744295367. The cubic root of 1057418661 is about 1018.7844872915.

The spelling of 1057418661 in words is "one billion, fifty-seven million, four hundred eighteen thousand, six hundred sixty-one".