2157788303 has 16 divisors (see below), whose sum is σ = 2434828032. Its totient is φ = 1895160000.

The previous prime is 2157788299. The next prime is 2157788327. The reversal of 2157788303 is 3038877512.

It is a Cunningham number, because it is equal to 46452²-1.

It is a cyclic number.

It is not a de Polignac number, because 2157788303 - 2² = 2157788299 is a prime.

It is a super-3 number, since 3×2157788303³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157728303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23228 + ... + 69678.

It is an arithmetic number, because the mean of its divisors is an integer number (152176752).

Almost surely, 2^2157788303 is an apocalyptic number.

2157788303 is a deficient number, since it is larger than the sum of its proper divisors (277039729).

2157788303 is a wasteful number, since it uses less digits than its factorization.

2157788303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46606.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 2157788303 is about 46451.9999892362. Note that the first 4 decimals coincide. The cubic root of 2157788303 is about 1292.2194636488.

The spelling of 2157788303 in words is "two billion, one hundred fifty-seven million, seven hundred eighty-eight thousand, three hundred three".