145709378 has 4 divisors (see below), whose sum is σ = 218564070. Its totient is φ = 72854688.

The previous prime is 145709371. The next prime is 145709381. The reversal of 145709378 is 873907541.

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., 74425129 + 71284249 = 8627^2 + 8443^2 .

It is not an unprimeable number, because it can be changed into a prime (145709371) 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 as a sum of consecutive naturals, namely, 36427343 + ... + 36427346.

Almost surely, 2^145709378 is an apocalyptic number.

145709378 is a deficient number, since it is larger than the sum of its proper divisors (72854692).

145709378 is an equidigital number, since it uses as much as digits as its factorization.

145709378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72854691.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 145709378 is about 12071.0139590674. The cubic root of 145709378 is about 526.2141248726.

The spelling of 145709378 in words is "one hundred forty-five million, seven hundred nine thousand, three hundred seventy-eight".