145493805 has 16 divisors (see below), whose sum is σ = 239082624. Its totient is φ = 75499200.

The previous prime is 145493801. The next prime is 145493809. The reversal of 145493805 is 508394541.

It is an interprime number because it is at equal distance from previous prime (145493801) and next prime (145493809).

It is not a de Polignac number, because 145493805 - 2² = 145493801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145493801) 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 15 ways as a sum of consecutive naturals, for example, 130521 + ... + 131630.

It is an arithmetic number, because the mean of its divisors is an integer number (14942664).

Almost surely, 2^145493805 is an apocalyptic number.

145493805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145493805 is a deficient number, since it is larger than the sum of its proper divisors (93588819).

145493805 is a wasteful number, since it uses less digits than its factorization.

145493805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262196.

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

The square root of 145493805 is about 12062.0812880697. The cubic root of 145493805 is about 525.9544903688.

It can be divided in two parts, 1454 and 93805, that added together give a palindrome (95259).

The spelling of 145493805 in words is "one hundred forty-five million, four hundred ninety-three thousand, eight hundred five".