1964226477 has 4 divisors (see below), whose sum is σ = 2618968640. Its totient is φ = 1309484316.

The previous prime is 1964226449. The next prime is 1964226527. The reversal of 1964226477 is 7746224691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1964226477 - 2⁷ = 1964226349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964228477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327371077 + ... + 327371082.

It is an arithmetic number, because the mean of its divisors is an integer number (654742160).

Almost surely, 2^1964226477 is an apocalyptic number.

It is an amenable number.

1964226477 is a deficient number, since it is larger than the sum of its proper divisors (654742163).

1964226477 is an equidigital number, since it uses as much as digits as its factorization.

1964226477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654742162.

The product of its digits is 1016064, while the sum is 48.

The square root of 1964226477 is about 44319.5947296453. The cubic root of 1964226477 is about 1252.3638420760.

The spelling of 1964226477 in words is "one billion, nine hundred sixty-four million, two hundred twenty-six thousand, four hundred seventy-seven".