2157475723 has 8 divisors (see below), whose sum is σ = 2336418000. Its totient is φ = 1980388128.

The previous prime is 2157475711. The next prime is 2157475741. The reversal of 2157475723 is 3275747512.

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

It is a cyclic number.

It is not a de Polignac number, because 2157475723 - 2¹³ = 2157467531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2157475723.

It is not an unprimeable number, because it can be changed into a prime (2157475753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461248 + ... + 465901.

It is an arithmetic number, because the mean of its divisors is an integer number (292052250).

Almost surely, 2^2157475723 is an apocalyptic number.

2157475723 is a deficient number, since it is larger than the sum of its proper divisors (178942277).

2157475723 is a wasteful number, since it uses less digits than its factorization.

2157475723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927341.

The product of its digits is 411600, while the sum is 43.

The square root of 2157475723 is about 46448.6353190274. The cubic root of 2157475723 is about 1292.1570631088.

The spelling of 2157475723 in words is "two billion, one hundred fifty-seven million, four hundred seventy-five thousand, seven hundred twenty-three".