1380759978 has 16 divisors (see below), whose sum is σ = 2973944736. Its totient is φ = 424849200.

The previous prime is 1380759967. The next prime is 1380760019. The reversal of 1380759978 is 8799570831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8850948 + ... + 8851103.

It is an arithmetic number, because the mean of its divisors is an integer number (185871546).

Almost surely, 2^1380759978 is an apocalyptic number.

1380759978 is an abundant number, since it is smaller than the sum of its proper divisors (1593184758).

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

1380759978 is a wasteful number, since it uses less digits than its factorization.

1380759978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17702069.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The square root of 1380759978 is about 37158.5787941358. The cubic root of 1380759978 is about 1113.5406186726.

The spelling of 1380759978 in words is "one billion, three hundred eighty million, seven hundred fifty-nine thousand, nine hundred seventy-eight".