145848778 has 4 divisors (see below), whose sum is σ = 218773170. Its totient is φ = 72924388.

The previous prime is 145848757. The next prime is 145848823. The reversal of 145848778 is 877848541.

145848778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 103897249 + 41951529 = 10193^2 + 6477^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36462193 + ... + 36462196.

Almost surely, 2^145848778 is an apocalyptic number.

145848778 is a deficient number, since it is larger than the sum of its proper divisors (72924392).

145848778 is an equidigital number, since it uses as much as digits as its factorization.

145848778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72924391.

The product of its digits is 2007040, while the sum is 52.

The square root of 145848778 is about 12076.7867415137. The cubic root of 145848778 is about 526.3818808761.

The spelling of 145848778 in words is "one hundred forty-five million, eight hundred forty-eight thousand, seven hundred seventy-eight".