1652615971 has 2 divisors, whose sum is σ = 1652615972. Its totient is φ = 1652615970.

The previous prime is 1652615969. The next prime is 1652616001. The reversal of 1652615971 is 1795162561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1652615971 - 2¹ = 1652615969 is a prime.

It is a super-2 number, since 2×1652615971² = 5462279095208545682, which contains 22 as substring.

Together with 1652615969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1652615911) 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 as a sum of consecutive naturals, namely, 826307985 + 826307986.

It is an arithmetic number, because the mean of its divisors is an integer number (826307986).

Almost surely, 2^1652615971 is an apocalyptic number.

1652615971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652615971 is an equidigital number, since it uses as much as digits as its factorization.

1652615971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 43.

The square root of 1652615971 is about 40652.3796474450. The cubic root of 1652615971 is about 1182.2899062526.

The spelling of 1652615971 in words is "one billion, six hundred fifty-two million, six hundred fifteen thousand, nine hundred seventy-one".