1967890964 has 48 divisors (see below), whose sum is σ = 3933529488. Its totient is φ = 853383168.

The previous prime is 1967890963. The next prime is 1967890973. The reversal of 1967890964 is 4690987691.

It can be written as a sum of positive squares in 8 ways, for example, as 392436100 + 1575454864 = 19810^2 + 39692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1967890963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646454 + ... + 649490.

It is an arithmetic number, because the mean of its divisors is an integer number (81948531).

Almost surely, 2^1967890964 is an apocalyptic number.

It is an amenable number.

1967890964 is a deficient number, since it is larger than the sum of its proper divisors (1965638524).

1967890964 is a wasteful number, since it uses less digits than its factorization.

1967890964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804 (or 3802 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 1967890964 is about 44360.9170779866. The cubic root of 1967890964 is about 1253.1421671303.

The spelling of 1967890964 in words is "one billion, nine hundred sixty-seven million, eight hundred ninety thousand, nine hundred sixty-four".