1330421990 has 16 divisors (see below), whose sum is σ = 2520799920. Its totient is φ = 504159840.

The previous prime is 1330421969. The next prime is 1330422011. The reversal of 1330421990 is 991240331.

It is an interprime number because it is at equal distance from previous prime (1330421969) and next prime (1330422011).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3500921 + ... + 3501300.

It is an arithmetic number, because the mean of its divisors is an integer number (157549995).

Almost surely, 2^1330421990 is an apocalyptic number.

1330421990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1330421990 is a deficient number, since it is larger than the sum of its proper divisors (1190377930).

1330421990 is a wasteful number, since it uses less digits than its factorization.

1330421990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002247.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1330421990 is about 36474.9501713162. The cubic root of 1330421990 is about 1099.8407455398.

The spelling of 1330421990 in words is "one billion, three hundred thirty million, four hundred twenty-one thousand, nine hundred ninety".