1979143488 has 84 divisors (see below), whose sum is σ = 6483278880. Its totient is φ = 565468416.

The previous prime is 1979143487. The next prime is 1979143547. The reversal of 1979143488 is 8843419791.

1979143488 is a `hidden beast` number, since 19 + 7 + 9 + 143 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a super-2 number, since 2×1979143488² = 7834017892185612288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979143487) 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 11 ways as a sum of consecutive naturals, for example, 241398 + ... + 249461.

Almost surely, 2^1979143488 is an apocalyptic number.

1979143488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1979143488 is an abundant number, since it is smaller than the sum of its proper divisors (4504135392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979143488 is a wasteful number, since it uses less digits than its factorization.

1979143488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490884 (or 490871 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 1979143488 is about 44487.5655436438. The cubic root of 1979143488 is about 1255.5261441561.

The spelling of 1979143488 in words is "one billion, nine hundred seventy-nine million, one hundred forty-three thousand, four hundred eighty-eight".