7145489907 has 6 divisors (see below), whose sum is σ = 10321263212. Its totient is φ = 4763659932.

The previous prime is 7145489873. The next prime is 7145489909. The reversal of 7145489907 is 7099845417.

7145489907 is a `hidden beast` number, since 7 + 1 + 4 + 548 + 9 + 90 + 7 = 666.

It is not a de Polignac number, because 7145489907 - 2⁸ = 7145489651 is a prime.

It is a super-2 number, since 2×7145489907² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7145489909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396971653 + ... + 396971670.

Almost surely, 2^7145489907 is an apocalyptic number.

7145489907 is a deficient number, since it is larger than the sum of its proper divisors (3175773305).

7145489907 is a wasteful number, since it uses less digits than its factorization.

7145489907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793943329 (or 793943326 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The square root of 7145489907 is about 84530.9996805906. Note that the first 3 decimals coincide. The cubic root of 7145489907 is about 1926.0933717345.

Adding to 7145489907 its sum of digits (54), we get a square (7145489961 = 84531²).

The spelling of 7145489907 in words is "seven billion, one hundred forty-five million, four hundred eighty-nine thousand, nine hundred seven".