2157180753 has 24 divisors (see below), whose sum is σ = 3603206208. Its totient is φ = 1137852576.

The previous prime is 2157180743. The next prime is 2157180757. The reversal of 2157180753 is 3570817512.

It is not a de Polignac number, because 2157180753 - 2⁴ = 2157180737 is a prime.

It is a super-3 number, since 3×2157180753³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2157180757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562501 + ... + 566322.

It is an arithmetic number, because the mean of its divisors is an integer number (150133592).

Almost surely, 2^2157180753 is an apocalyptic number.

It is an amenable number.

2157180753 is a deficient number, since it is larger than the sum of its proper divisors (1446025455).

2157180753 is a wasteful number, since it uses less digits than its factorization.

2157180753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128853 (or 1128846 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 2157180753 is about 46445.4599826506. The cubic root of 2157180753 is about 1292.0981725365.

The spelling of 2157180753 in words is "two billion, one hundred fifty-seven million, one hundred eighty thousand, seven hundred fifty-three".