1672140745 has 24 divisors (see below), whose sum is σ = 2213329608. Its totient is φ = 1211823360.

The previous prime is 1672140739. The next prime is 1672140751. The reversal of 1672140745 is 5470412761.

It is an interprime number because it is at equal distance from previous prime (1672140739) and next prime (1672140751).

It can be written as a sum of positive squares in 4 ways, for example, as 690007824 + 982132921 = 26268^2 + 31339^2 .

It is not a de Polignac number, because 1672140745 - 2⁹ = 1672140233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172549 + ... + 181981.

It is an arithmetic number, because the mean of its divisors is an integer number (92222067).

Almost surely, 2^1672140745 is an apocalyptic number.

It is an amenable number.

1672140745 is a deficient number, since it is larger than the sum of its proper divisors (541188863).

1672140745 is a wasteful number, since it uses less digits than its factorization.

1672140745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9753 (or 9742 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 1672140745 is about 40891.8175800489. The cubic root of 1672140745 is about 1186.9277304662.

The spelling of 1672140745 in words is "one billion, six hundred seventy-two million, one hundred forty thousand, seven hundred forty-five".