1988382434 has 8 divisors (see below), whose sum is σ = 2989044828. Its totient is φ = 992034160.

The previous prime is 1988382427. The next prime is 1988382437. The reversal of 1988382434 is 4342838891.

It can be written as a sum of positive squares in 2 ways, for example, as 1623687025 + 364695409 = 40295^2 + 19097^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1988382437) 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, 1077377 + ... + 1079220.

Almost surely, 2^1988382434 is an apocalyptic number.

1988382434 is a deficient number, since it is larger than the sum of its proper divisors (1000662394).

1988382434 is a wasteful number, since it uses less digits than its factorization.

1988382434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157060.

The product of its digits is 1327104, while the sum is 50.

The square root of 1988382434 is about 44591.2820403271. The cubic root of 1988382434 is about 1257.4767750217.

The spelling of 1988382434 in words is "one billion, nine hundred eighty-eight million, three hundred eighty-two thousand, four hundred thirty-four".