1378001039 has 4 divisors (see below), whose sum is σ = 1378143624. Its totient is φ = 1377858456.

The previous prime is 1378000997. The next prime is 1378001059. The reversal of 1378001039 is 9301008731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1378001039 - 2¹² = 1377996943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1378000996 and 1378001014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378001059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55652 + ... + 76505.

It is an arithmetic number, because the mean of its divisors is an integer number (344535906).

Almost surely, 2^1378001039 is an apocalyptic number.

1378001039 is a deficient number, since it is larger than the sum of its proper divisors (142585).

1378001039 is a wasteful number, since it uses less digits than its factorization.

1378001039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142584.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1378001039 is about 37121.4363811531. The cubic root of 1378001039 is about 1112.7984575494.

The spelling of 1378001039 in words is "one billion, three hundred seventy-eight million, one thousand, thirty-nine".