1652289421 has 2 divisors, whose sum is σ = 1652289422. Its totient is φ = 1652289420.

The previous prime is 1652289407. The next prime is 1652289437. The reversal of 1652289421 is 1249822561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1266363396 + 385926025 = 35586^2 + 19645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652289421 - 2⁵ = 1652289389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1652289461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826144710 + 826144711.

It is an arithmetic number, because the mean of its divisors is an integer number (826144711).

Almost surely, 2^1652289421 is an apocalyptic number.

It is an amenable number.

1652289421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652289421 is an equidigital number, since it uses as much as digits as its factorization.

1652289421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 1652289421 is about 40648.3630789728. The cubic root of 1652289421 is about 1182.2120292771.

The spelling of 1652289421 in words is "one billion, six hundred fifty-two million, two hundred eighty-nine thousand, four hundred twenty-one".