1052781645 has 32 divisors (see below), whose sum is σ = 1759968000. Its totient is φ = 536374784.

The previous prime is 1052781589. The next prime is 1052781647. The reversal of 1052781645 is 5461872501.

It is a cyclic number.

It is not a de Polignac number, because 1052781645 - 2⁷ = 1052781517 is a prime.

It is a super-3 number, since 3×1052781645³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052781647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 360451 + ... + 363359.

It is an arithmetic number, because the mean of its divisors is an integer number (54999000).

Almost surely, 2^1052781645 is an apocalyptic number.

1052781645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1052781645 is a deficient number, since it is larger than the sum of its proper divisors (707186355).

1052781645 is a wasteful number, since it uses less digits than its factorization.

1052781645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 1052781645 is about 32446.5968169237. The cubic root of 1052781645 is about 1017.2931062980.

It can be divided in two parts, 1052781 and 645, that added together give a triangular number (1053426 = T₁₄₅₁).

The spelling of 1052781645 in words is "one billion, fifty-two million, seven hundred eighty-one thousand, six hundred forty-five".