1988613290 has 16 divisors (see below), whose sum is σ = 3640174560. Its totient is φ = 781962960.

The previous prime is 1988613271. The next prime is 1988613299. The reversal of 1988613290 is 923168891.

It is not an unprimeable number, because it can be changed into a prime (1988613299) 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, 1684676 + ... + 1685855.

It is an arithmetic number, because the mean of its divisors is an integer number (227510910).

Almost surely, 2^1988613290 is an apocalyptic number.

1988613290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1988613290 is a deficient number, since it is larger than the sum of its proper divisors (1651561270).

1988613290 is a wasteful number, since it uses less digits than its factorization.

1988613290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370597.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 1988613290 is about 44593.8705429345. The cubic root of 1988613290 is about 1257.5254385014.

The spelling of 1988613290 in words is "one billion, nine hundred eighty-eight million, six hundred thirteen thousand, two hundred ninety".