378522226 has 4 divisors (see below), whose sum is σ = 567783342. Its totient is φ = 189261112.

The previous prime is 378522203. The next prime is 378522233. The reversal of 378522226 is 622225873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622225873 = 3079 ⋅202087.

It can be written as a sum of positive squares in only one way, i.e., 344288025 + 34234201 = 18555^2 + 5851^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94630555 + ... + 94630558.

Almost surely, 2^378522226 is an apocalyptic number.

378522226 is a deficient number, since it is larger than the sum of its proper divisors (189261116).

378522226 is a wasteful number, since it uses less digits than its factorization.

378522226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189261115.

The product of its digits is 80640, while the sum is 37.

The square root of 378522226 is about 19455.6476633393. The cubic root of 378522226 is about 723.3754992987.

The spelling of 378522226 in words is "three hundred seventy-eight million, five hundred twenty-two thousand, two hundred twenty-six".