1964456129 has 2 divisors, whose sum is σ = 1964456130. Its totient is φ = 1964456128.

The previous prime is 1964456101. The next prime is 1964456167. The reversal of 1964456129 is 9216544691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1628283904 + 336172225 = 40352^2 + 18335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1964456129 - 2⁸ = 1964455873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1964956129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982228064 + 982228065.

It is an arithmetic number, because the mean of its divisors is an integer number (982228065).

Almost surely, 2^1964456129 is an apocalyptic number.

It is an amenable number.

1964456129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964456129 is an equidigital number, since it uses as much as digits as its factorization.

1964456129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 1964456129 is about 44322.1855169620. The cubic root of 1964456129 is about 1252.4126478284.

The spelling of 1964456129 in words is "one billion, nine hundred sixty-four million, four hundred fifty-six thousand, one hundred twenty-nine".