1964167988 has 12 divisors (see below), whose sum is σ = 3438917412. Its totient is φ = 981620160.

The previous prime is 1964167987. The next prime is 1964167991. The reversal of 1964167988 is 8897614691.

It can be written as a sum of positive squares in 2 ways, for example, as 223442704 + 1740725284 = 14948^2 + 41722^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964167987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106343 + ... + 123438.

It is an arithmetic number, because the mean of its divisors is an integer number (286576451).

Almost surely, 2^1964167988 is an apocalyptic number.

It is an amenable number.

1964167988 is a deficient number, since it is larger than the sum of its proper divisors (1474749424).

1964167988 is a wasteful number, since it uses less digits than its factorization.

1964167988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231922 (or 231920 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 59.

The square root of 1964167988 is about 44318.9348698725. The cubic root of 1964167988 is about 1252.3514113581.

The spelling of 1964167988 in words is "one billion, nine hundred sixty-four million, one hundred sixty-seven thousand, nine hundred eighty-eight".