145412818 has 4 divisors (see below), whose sum is σ = 218119230. Its totient is φ = 72706408.

The previous prime is 145412809. The next prime is 145412821. The reversal of 145412818 is 818214541.

It is a happy number.

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., 142969849 + 2442969 = 11957^2 + 1563^2 .

It is a super-2 number, since 2×145412818² = 42289775277402248, which contains 22 as substring.

It is an unprimeable number.

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, 36353203 + ... + 36353206.

Almost surely, 2^145412818 is an apocalyptic number.

145412818 is a deficient number, since it is larger than the sum of its proper divisors (72706412).

145412818 is an equidigital number, since it uses as much as digits as its factorization.

145412818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706411.

The product of its digits is 10240, while the sum is 34.

The square root of 145412818 is about 12058.7237301466. The cubic root of 145412818 is about 525.8568839630.

The spelling of 145412818 in words is "one hundred forty-five million, four hundred twelve thousand, eight hundred eighteen".