145327394 has 4 divisors (see below), whose sum is σ = 217991094. Its totient is φ = 72663696.

The previous prime is 145327387. The next prime is 145327397. The reversal of 145327394 is 493723541.

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., 80766169 + 64561225 = 8987^2 + 8035^2 .

It is a super-2 number, since 2×145327394² = 42240102893662472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145327397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36331847 + ... + 36331850.

Almost surely, 2^145327394 is an apocalyptic number.

145327394 is a deficient number, since it is larger than the sum of its proper divisors (72663700).

145327394 is an equidigital number, since it uses as much as digits as its factorization.

145327394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72663699.

The product of its digits is 90720, while the sum is 38.

The square root of 145327394 is about 12055.1812097538. The cubic root of 145327394 is about 525.7538907553.

The spelling of 145327394 in words is "one hundred forty-five million, three hundred twenty-seven thousand, three hundred ninety-four".