1620848239 has 2 divisors, whose sum is σ = 1620848240. Its totient is φ = 1620848238.

The previous prime is 1620848227. The next prime is 1620848261. The reversal of 1620848239 is 9328480261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1620848239 - 2⁹ = 1620847727 is a prime.

It is a super-2 number, since 2×1620848239² = 5254298027738802242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1620848195 and 1620848204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1620848209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810424119 + 810424120.

It is an arithmetic number, because the mean of its divisors is an integer number (810424120).

Almost surely, 2^1620848239 is an apocalyptic number.

1620848239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620848239 is an equidigital number, since it uses as much as digits as its factorization.

1620848239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1620848239 is about 40259.7595497042. The cubic root of 1620848239 is about 1174.6652407455.

The spelling of 1620848239 in words is "one billion, six hundred twenty million, eight hundred forty-eight thousand, two hundred thirty-nine".