1662020153 has 2 divisors, whose sum is σ = 1662020154. Its totient is φ = 1662020152.

The previous prime is 1662020141. The next prime is 1662020161. The reversal of 1662020153 is 3510202661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 908901904 + 753118249 = 30148^2 + 27443^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662020153 - 2¹⁶ = 1661954617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1662020183) 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, 831010076 + 831010077.

It is an arithmetic number, because the mean of its divisors is an integer number (831010077).

Almost surely, 2^1662020153 is an apocalyptic number.

It is an amenable number.

1662020153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662020153 is an equidigital number, since it uses as much as digits as its factorization.

1662020153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1662020153 is about 40767.8813896430. The cubic root of 1662020153 is about 1184.5282657693.

The spelling of 1662020153 in words is "one billion, six hundred sixty-two million, twenty thousand, one hundred fifty-three".