145909791 has 6 divisors (see below), whose sum is σ = 210758600. Its totient is φ = 97273188.

The previous prime is 145909789. The next prime is 145909837. The reversal of 145909791 is 197909541.

It is not a de Polignac number, because 145909791 - 2¹ = 145909789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145909741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8106091 + ... + 8106108.

Almost surely, 2^145909791 is an apocalyptic number.

145909791 is a deficient number, since it is larger than the sum of its proper divisors (64848809).

145909791 is a wasteful number, since it uses less digits than its factorization.

145909791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16212205 (or 16212202 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 145909791 is about 12079.3125218284. The cubic root of 145909791 is about 526.4552711844.

The spelling of 145909791 in words is "one hundred forty-five million, nine hundred nine thousand, seven hundred ninety-one".