1390330633 has 4 divisors (see below), whose sum is σ = 1391202820. Its totient is φ = 1389458448.

The previous prime is 1390330631. The next prime is 1390330639. The reversal of 1390330633 is 3360330931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 993006144 + 397324489 = 31512^2 + 19933^2 .

It is a cyclic number.

It is not a de Polignac number, because 1390330633 - 2¹ = 1390330631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1390330595 and 1390330604.

It is not an unprimeable number, because it can be changed into a prime (1390330631) 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, 433698 + ... + 436891.

It is an arithmetic number, because the mean of its divisors is an integer number (347800705).

Almost surely, 2^1390330633 is an apocalyptic number.

It is an amenable number.

1390330633 is a deficient number, since it is larger than the sum of its proper divisors (872187).

1390330633 is an equidigital number, since it uses as much as digits as its factorization.

1390330633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872186.

The product of its (nonzero) digits is 13122, while the sum is 31.

The square root of 1390330633 is about 37287.1376348467. The cubic root of 1390330633 is about 1116.1075103686.

The spelling of 1390330633 in words is "one billion, three hundred ninety million, three hundred thirty thousand, six hundred thirty-three".