2170423745 has 32 divisors (see below), whose sum is σ = 3154982400. Its totient is φ = 1399274496.

The previous prime is 2170423699. The next prime is 2170423747. The reversal of 2170423745 is 5473240712.

It is a cyclic number.

It is not a de Polignac number, because 2170423745 - 2¹⁶ = 2170358209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (2170423747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1063436 + ... + 1065474.

It is an arithmetic number, because the mean of its divisors is an integer number (98593200).

Almost surely, 2^2170423745 is an apocalyptic number.

It is an amenable number.

2170423745 is a deficient number, since it is larger than the sum of its proper divisors (984558655).

2170423745 is a wasteful number, since it uses less digits than its factorization.

2170423745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 2170423745 is about 46587.8068275380. The cubic root of 2170423745 is about 1294.7368556425.

The spelling of 2170423745 in words is "two billion, one hundred seventy million, four hundred twenty-three thousand, seven hundred forty-five".