1988279102 has 8 divisors (see below), whose sum is σ = 2989857312. Its totient is φ = 991660000.

The previous prime is 1988279099. The next prime is 1988279113. The reversal of 1988279102 is 2019728891.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1238774 + ... + 1240377.

It is an arithmetic number, because the mean of its divisors is an integer number (373732164).

Almost surely, 2^1988279102 is an apocalyptic number.

1988279102 is a deficient number, since it is larger than the sum of its proper divisors (1001578210).

1988279102 is a wasteful number, since it uses less digits than its factorization.

1988279102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479554.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1988279102 is about 44590.1233682976. The cubic root of 1988279102 is about 1257.4549918478.

The spelling of 1988279102 in words is "one billion, nine hundred eighty-eight million, two hundred seventy-nine thousand, one hundred two".