2157723370 has 32 divisors (see below), whose sum is σ = 4296675456. Its totient is φ = 773572800.

The previous prime is 2157723367. The next prime is 2157723389. The reversal of 2157723370 is 733277512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130329 + ... + 145948.

It is an arithmetic number, because the mean of its divisors is an integer number (134271108).

Almost surely, 2^2157723370 is an apocalyptic number.

2157723370 is a deficient number, since it is larger than the sum of its proper divisors (2138952086).

2157723370 is a wasteful number, since it uses less digits than its factorization.

2157723370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276366.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 2157723370 is about 46451.3010582050. The cubic root of 2157723370 is about 1292.2065015295.

It can be divided in two parts, 2157 and 723370, that added together give a palindrome (725527).

The spelling of 2157723370 in words is "two billion, one hundred fifty-seven million, seven hundred twenty-three thousand, three hundred seventy".