1390001038 has 8 divisors (see below), whose sum is σ = 2088857160. Its totient is φ = 693715320.

The previous prime is 1390001029. The next prime is 1390001047. The reversal of 1390001038 is 8301000931.

It is an interprime number because it is at equal distance from previous prime (1390001029) and next prime (1390001047).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641248 + ... + 643411.

It is an arithmetic number, because the mean of its divisors is an integer number (261107145).

Almost surely, 2^1390001038 is an apocalyptic number.

1390001038 is a deficient number, since it is larger than the sum of its proper divisors (698856122).

1390001038 is a wasteful number, since it uses less digits than its factorization.

1390001038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285202.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1390001038 is about 37282.7176852761. The cubic root of 1390001038 is about 1116.0193077213.

Adding to 1390001038 its reverse (8301000931), we get a palindrome (9691001969).

The spelling of 1390001038 in words is "one billion, three hundred ninety million, one thousand, thirty-eight".