2157689088 has 216 divisors, whose sum is σ = 6594107520. Its totient is φ = 677376000.

The previous prime is 2157689057. The next prime is 2157689101. The reversal of 2157689088 is 8809867512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2872713 + ... + 2873463.

Almost surely, 2^2157689088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157689088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3297053760).

2157689088 is an abundant number, since it is smaller than the sum of its proper divisors (4436418432).

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

2157689088 is a wasteful number, since it uses less digits than its factorization.

2157689088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The square root of 2157689088 is about 46450.9320466231. The cubic root of 2157689088 is about 1292.1996579494.

The spelling of 2157689088 in words is "two billion, one hundred fifty-seven million, six hundred eighty-nine thousand, eighty-eight".