1378052352 has 90 divisors (see below), whose sum is σ = 4109164598. Its totient is φ = 459343872.

The previous prime is 1378052341. The next prime is 1378052371. The reversal of 1378052352 is 2532508731.

It is a happy number.

1378052352 is a `hidden beast` number, since 1 + 3 + 7 + 80 + 523 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 994519296 + 383533056 = 31536^2 + 19584^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12493 + ... + 53964.

Almost surely, 2^1378052352 is an apocalyptic number.

1378052352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1378052352 is an abundant number, since it is smaller than the sum of its proper divisors (2731112246).

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

1378052352 is an frugal number, since it uses more digits than its factorization.

1378052352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66485 (or 66462 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 1378052352 is about 37122.1275252376. The cubic root of 1378052352 is about 1112.8122699044.

The spelling of 1378052352 in words is "one billion, three hundred seventy-eight million, fifty-two thousand, three hundred fifty-two".