3652428781 has 2 divisors, whose sum is σ = 3652428782. Its totient is φ = 3652428780.

The previous prime is 3652428763. The next prime is 3652428799. The reversal of 3652428781 is 1878242563.

It is a balanced prime because it is at equal distance from previous prime (3652428763) and next prime (3652428799).

It can be written as a sum of positive squares in only one way, i.e., 3520523556 + 131905225 = 59334^2 + 11485^2 .

It is a cyclic number.

It is not a de Polignac number, because 3652428781 - 2³¹ = 1504945133 is a prime.

It is a super-2 number, since 2×3652428781² = 26680472000554291922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3652428181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1826214390 + 1826214391.

It is an arithmetic number, because the mean of its divisors is an integer number (1826214391).

Almost surely, 2^3652428781 is an apocalyptic number.

3652428781 is the 27028-th centered decagonal number.

It is an amenable number.

3652428781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3652428781 is an equidigital number, since it uses as much as digits as its factorization.

3652428781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 46.

The square root of 3652428781 is about 60435.3272598072. The cubic root of 3652428781 is about 1540.0231599654.

The spelling of 3652428781 in words is "three billion, six hundred fifty-two million, four hundred twenty-eight thousand, seven hundred eighty-one".