1764013989 has 16 divisors (see below), whose sum is σ = 2417361920. Its totient is φ = 1143782640.

The previous prime is 1764013973. The next prime is 1764013991. The reversal of 1764013989 is 9893104671.

It is a happy number.

It is not a de Polignac number, because 1764013989 - 2⁴ = 1764013973 is a prime.

It is a super-2 number, since 2×1764013989² = 6223490706775384242, which contains 22 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 (1764013969) 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, 39667 + ... + 71424.

It is an arithmetic number, because the mean of its divisors is an integer number (151085120).

Almost surely, 2^1764013989 is an apocalyptic number.

It is an amenable number.

1764013989 is a deficient number, since it is larger than the sum of its proper divisors (653347931).

1764013989 is a wasteful number, since it uses less digits than its factorization.

1764013989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111240.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1764013989 is about 42000.1665353841. The cubic root of 1764013989 is about 1208.2793175738.

The spelling of 1764013989 in words is "one billion, seven hundred sixty-four million, thirteen thousand, nine hundred eighty-nine".