1390018819 has 16 divisors (see below), whose sum is σ = 1648512000. Its totient is φ = 1171233672.

The previous prime is 1390018813. The next prime is 1390018829. The reversal of 1390018819 is 9188100931.

It is a happy number.

It is not a de Polignac number, because 1390018819 - 2¹⁷ = 1389887747 is a prime.

It is a super-2 number, since 2×1390018819² = 3864304634348309522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390018813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14107 + ... + 54580.

It is an arithmetic number, because the mean of its divisors is an integer number (103032000).

Almost surely, 2^1390018819 is an apocalyptic number.

1390018819 is a deficient number, since it is larger than the sum of its proper divisors (258493181).

1390018819 is an frugal number, since it uses more digits than its factorization.

1390018819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68767 (or 68753 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 1390018819 is about 37282.9561462071. The cubic root of 1390018819 is about 1116.0240664359.

The spelling of 1390018819 in words is "one billion, three hundred ninety million, eighteen thousand, eight hundred nineteen".