145849305 has 32 divisors (see below), whose sum is σ = 267531264. Its totient is φ = 66465216.

The previous prime is 145849271. The next prime is 145849321. The reversal of 145849305 is 503948541.

It is not a de Polignac number, because 145849305 - 2¹⁵ = 145816537 is a prime.

It is a Curzon number.

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, 34434 + ... + 38436.

It is an arithmetic number, because the mean of its divisors is an integer number (8360352).

Almost surely, 2^145849305 is an apocalyptic number.

145849305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145849305 is a deficient number, since it is larger than the sum of its proper divisors (121681959).

145849305 is a wasteful number, since it uses less digits than its factorization.

145849305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 145849305 is about 12076.8085602116. The cubic root of 145849305 is about 526.3825148728.

The spelling of 145849305 in words is "one hundred forty-five million, eight hundred forty-nine thousand, three hundred five".