2157508810 has 8 divisors (see below), whose sum is σ = 3883515876. Its totient is φ = 863003520.

The previous prime is 2157508799. The next prime is 2157508841. The reversal of 2157508810 is 188057512.

It can be written as a sum of positive squares in 2 ways, for example, as 2129914801 + 27594009 = 46151^2 + 5253^2 .

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

It is a super-2 number, since 2×2157508810² = 9309688530455232200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2157508810.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107875431 + ... + 107875450.

Almost surely, 2^2157508810 is an apocalyptic number.

2157508810 is a deficient number, since it is larger than the sum of its proper divisors (1726007066).

2157508810 is a wasteful number, since it uses less digits than its factorization.

2157508810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215750888.

The product of its (nonzero) digits is 22400, while the sum is 37.

The square root of 2157508810 is about 46448.9914852842. The cubic root of 2157508810 is about 1292.1636685724.

The spelling of 2157508810 in words is "two billion, one hundred fifty-seven million, five hundred eight thousand, eight hundred ten".