145819770 has 32 divisors (see below), whose sum is σ = 365185152. Its totient is φ = 37194432.

The previous prime is 145819759. The next prime is 145819771. The reversal of 145819770 is 77918541.

It is not an unprimeable number, because it can be changed into a prime (145819771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104977 + ... + 106356.

It is an arithmetic number, because the mean of its divisors is an integer number (11412036).

Almost surely, 2^145819770 is an apocalyptic number.

145819770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145819770 is an abundant number, since it is smaller than the sum of its proper divisors (219365382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145819770 is a wasteful number, since it uses less digits than its factorization.

145819770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211366.

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 145819770 is about 12075.5857000810. The cubic root of 145819770 is about 526.3469810339.

The spelling of 145819770 in words is "one hundred forty-five million, eight hundred nineteen thousand, seven hundred seventy".