1352847978 has 24 divisors (see below), whose sum is σ = 2957114628. Its totient is φ = 446957952.

The previous prime is 1352847961. The next prime is 1352848001. The reversal of 1352847978 is 8797482531.

It is a happy number.

1352847978 is a `hidden beast` number, since 1 + 3 + 528 + 47 + 9 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1350783009 + 2064969 = 36753^2 + 1437^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330525 + ... + 334592.

Almost surely, 2^1352847978 is an apocalyptic number.

1352847978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1352847978 is an abundant number, since it is smaller than the sum of its proper divisors (1604266650).

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

1352847978 is a wasteful number, since it uses less digits than its factorization.

1352847978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665238 (or 665235 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 1352847978 is about 36781.0817948575. The cubic root of 1352847978 is about 1105.9860919065.

The spelling of 1352847978 in words is "one billion, three hundred fifty-two million, eight hundred forty-seven thousand, nine hundred seventy-eight".