1378151128 has 16 divisors (see below), whose sum is σ = 2667389760. Its totient is φ = 666847200.

The previous prime is 1378151077. The next prime is 1378151147. The reversal of 1378151128 is 8211518731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2778283 + ... + 2778778.

It is an arithmetic number, because the mean of its divisors is an integer number (166711860).

Almost surely, 2^1378151128 is an apocalyptic number.

It is an amenable number.

1378151128 is a deficient number, since it is larger than the sum of its proper divisors (1289238632).

1378151128 is a wasteful number, since it uses less digits than its factorization.

1378151128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557098 (or 5557094 counting only the distinct ones).

The product of its digits is 13440, while the sum is 37.

The square root of 1378151128 is about 37123.4579208349. The cubic root of 1378151128 is about 1112.8388573120.

Adding to 1378151128 its reverse (8211518731), we get a palindrome (9589669859).

The spelling of 1378151128 in words is "one billion, three hundred seventy-eight million, one hundred fifty-one thousand, one hundred twenty-eight".