1378947059 has 16 divisors (see below), whose sum is σ = 1671014400. Its totient is φ = 1111558464.

The previous prime is 1378947049. The next prime is 1378947107. The reversal of 1378947059 is 9507498731.

It is a cyclic number.

It is not a de Polignac number, because 1378947059 - 2¹⁶ = 1378881523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1378947059.

It is not an unprimeable number, because it can be changed into a prime (1378947049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19619 + ... + 56060.

It is an arithmetic number, because the mean of its divisors is an integer number (104438400).

Almost surely, 2^1378947059 is an apocalyptic number.

1378947059 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1378947059 is a deficient number, since it is larger than the sum of its proper divisors (292067341).

1378947059 is a wasteful number, since it uses less digits than its factorization.

1378947059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75842.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 1378947059 is about 37134.1764281908. The cubic root of 1378947059 is about 1113.0530506771.

The spelling of 1378947059 in words is "one billion, three hundred seventy-eight million, nine hundred forty-seven thousand, fifty-nine".