1378065236 has 6 divisors (see below), whose sum is σ = 2411614170. Its totient is φ = 689032616.

The previous prime is 1378065223. The next prime is 1378065251. The reversal of 1378065236 is 6325608731.

It can be written as a sum of positive squares in only one way, i.e., 1376855236 + 1210000 = 37106^2 + 1100^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1378065193 and 1378065202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172258151 + ... + 172258158.

It is an arithmetic number, because the mean of its divisors is an integer number (401935695).

Almost surely, 2^1378065236 is an apocalyptic number.

It is an amenable number.

1378065236 is a deficient number, since it is larger than the sum of its proper divisors (1033548934).

1378065236 is a wasteful number, since it uses less digits than its factorization.

1378065236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344516313 (or 344516311 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1378065236 is about 37122.3010601444. The cubic root of 1378065236 is about 1112.8157379460.

The spelling of 1378065236 in words is "one billion, three hundred seventy-eight million, sixty-five thousand, two hundred thirty-six".