1964240989 has 8 divisors (see below), whose sum is σ = 2019456032. Its totient is φ = 1909459440.

The previous prime is 1964240987. The next prime is 1964241017. The reversal of 1964240989 is 9890424691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1964240989 - 2¹ = 1964240987 is a prime.

It is a super-4 number, since 4×1964240989⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964240981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99174 + ... + 117319.

It is an arithmetic number, because the mean of its divisors is an integer number (252432004).

Almost surely, 2^1964240989 is an apocalyptic number.

It is an amenable number.

1964240989 is a deficient number, since it is larger than the sum of its proper divisors (55215043).

1964240989 is a wasteful number, since it uses less digits than its factorization.

1964240989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216747.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 1964240989 is about 44319.7584492515. The cubic root of 1964240989 is about 1252.3669262858.

The spelling of 1964240989 in words is "one billion, nine hundred sixty-four million, two hundred forty thousand, nine hundred eighty-nine".