814435378 has 4 divisors (see below), whose sum is σ = 1221653070. Its totient is φ = 407217688.

The previous prime is 814435373. The next prime is 814435393. The reversal of 814435378 is 873534418.

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., 542284369 + 272151009 = 23287^2 + 16497^2 .

It is not an unprimeable number, because it can be changed into a prime (814435373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203608843 + ... + 203608846.

Almost surely, 2^814435378 is an apocalyptic number.

814435378 is a deficient number, since it is larger than the sum of its proper divisors (407217692).

814435378 is a wasteful number, since it uses less digits than its factorization.

814435378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407217691.

The product of its digits is 322560, while the sum is 43.

The square root of 814435378 is about 28538.3142108990. The cubic root of 814435378 is about 933.8681063155.

The spelling of 814435378 in words is "eight hundred fourteen million, four hundred thirty-five thousand, three hundred seventy-eight".