1053665718 has 96 divisors (see below), whose sum is σ = 2511648000. Its totient is φ = 293743296.

The previous prime is 1053665689. The next prime is 1053665747. The reversal of 1053665718 is 8175663501.

It is an interprime number because it is at equal distance from previous prime (1053665689) and next prime (1053665747).

It is a super-2 number, since 2×1053665718² = 2220422890576911048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1053665718.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2934823 + ... + 2935181.

It is an arithmetic number, because the mean of its divisors is an integer number (26163000).

Almost surely, 2^1053665718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1053665718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255824000).

1053665718 is an abundant number, since it is smaller than the sum of its proper divisors (1457982282).

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

1053665718 is a wasteful number, since it uses less digits than its factorization.

1053665718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 1053665718 is about 32460.2174669240. The cubic root of 1053665718 is about 1017.5777837978.

The spelling of 1053665718 in words is "one billion, fifty-three million, six hundred sixty-five thousand, seven hundred eighteen".