1652538857 has 4 divisors (see below), whose sum is σ = 1652696916. Its totient is φ = 1652380800.

The previous prime is 1652538841. The next prime is 1652538893. The reversal of 1652538857 is 7588352561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1481557081 + 170981776 = 38491^2 + 13076^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652538857 - 2⁴ = 1652538841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1652538457) 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, 62144 + ... + 84657.

It is an arithmetic number, because the mean of its divisors is an integer number (413174229).

Almost surely, 2^1652538857 is an apocalyptic number.

It is an amenable number.

1652538857 is a deficient number, since it is larger than the sum of its proper divisors (158059).

1652538857 is a wasteful number, since it uses less digits than its factorization.

1652538857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158058.

The product of its digits is 2016000, while the sum is 50.

The square root of 1652538857 is about 40651.4311802180. The cubic root of 1652538857 is about 1182.2715167168.

The spelling of 1652538857 in words is "one billion, six hundred fifty-two million, five hundred thirty-eight thousand, eight hundred fifty-seven".