164963489 has 2 divisors, whose sum is σ = 164963490. Its totient is φ = 164963488.

The previous prime is 164963483. The next prime is 164963527. The reversal of 164963489 is 984369461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142086400 + 22877089 = 11920^2 + 4783^2 .

It is a cyclic number.

It is not a de Polignac number, because 164963489 - 2¹² = 164959393 is a prime.

It is not a weakly prime, because it can be changed into another prime (164963483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82481744 + 82481745.

It is an arithmetic number, because the mean of its divisors is an integer number (82481745).

Almost surely, 2^164963489 is an apocalyptic number.

It is an amenable number.

164963489 is a deficient number, since it is larger than the sum of its proper divisors (1).

164963489 is an equidigital number, since it uses as much as digits as its factorization.

164963489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 164963489 is about 12843.8113112892. The cubic root of 164963489 is about 548.4401965474.

The spelling of 164963489 in words is "one hundred sixty-four million, nine hundred sixty-three thousand, four hundred eighty-nine".