1378148508 has 72 divisors (see below), whose sum is σ = 4000389120. Its totient is φ = 395638560.

The previous prime is 1378148507. The next prime is 1378148533. The reversal of 1378148508 is 8058418731.

It is a happy number.

1378148508 is a `hidden beast` number, since 137 + 8 + 1 + 4 + 8 + 508 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378148507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84060 + ... + 99107.

It is an arithmetic number, because the mean of its divisors is an integer number (55560960).

Almost surely, 2^1378148508 is an apocalyptic number.

1378148508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1378148508 is an abundant number, since it is smaller than the sum of its proper divisors (2622240612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378148508 is a wasteful number, since it uses less digits than its factorization.

1378148508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183207 (or 183202 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 1378148508 is about 37123.4226331571. The cubic root of 1378148508 is about 1112.8381521064.

The spelling of 1378148508 in words is "one billion, three hundred seventy-eight million, one hundred forty-eight thousand, five hundred eight".