1652563861 has 4 divisors (see below), whose sum is σ = 1779684172. Its totient is φ = 1525443552.

The previous prime is 1652563813. The next prime is 1652563873. The reversal of 1652563861 is 1683652561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1683652561 = 1297 ⋅1298113.

It can be written as a sum of positive squares in 2 ways, for example, as 1061782225 + 590781636 = 32585^2 + 24306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652563861 - 2¹⁵ = 1652531093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1652561861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63560136 + ... + 63560161.

It is an arithmetic number, because the mean of its divisors is an integer number (444921043).

Almost surely, 2^1652563861 is an apocalyptic number.

It is an amenable number.

1652563861 is a deficient number, since it is larger than the sum of its proper divisors (127120311).

1652563861 is a wasteful number, since it uses less digits than its factorization.

1652563861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127120310.

The product of its digits is 259200, while the sum is 43.

The square root of 1652563861 is about 40651.7387205025. The cubic root of 1652563861 is about 1182.2774795353.

The spelling of 1652563861 in words is "one billion, six hundred fifty-two million, five hundred sixty-three thousand, eight hundred sixty-one".