7172193145 has 32 divisors (see below), whose sum is σ = 9709862400. Its totient is φ = 5048918784.

The previous prime is 7172193137. The next prime is 7172193167. The reversal of 7172193145 is 5413912717.

It is a happy number.

It is not a de Polignac number, because 7172193145 - 2³ = 7172193137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7172193098 and 7172193107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124834 + ... + 172996.

It is an arithmetic number, because the mean of its divisors is an integer number (303433200).

Almost surely, 2^7172193145 is an apocalyptic number.

It is an amenable number.

7172193145 is a deficient number, since it is larger than the sum of its proper divisors (2537669255).

7172193145 is a wasteful number, since it uses less digits than its factorization.

7172193145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48289.

The product of its digits is 52920, while the sum is 40.

The square root of 7172193145 is about 84688.8017685928. The cubic root of 7172193145 is about 1928.4897081409.

The spelling of 7172193145 in words is "seven billion, one hundred seventy-two million, one hundred ninety-three thousand, one hundred forty-five".