1990141451 has 2 divisors, whose sum is σ = 1990141452. Its totient is φ = 1990141450.

The previous prime is 1990141429. The next prime is 1990141457. The reversal of 1990141451 is 1541410991.

It is a strong prime.

It is an emirp because it is prime and its reverse (1541410991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1990141451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1990141457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995070725 + 995070726.

It is an arithmetic number, because the mean of its divisors is an integer number (995070726).

Almost surely, 2^1990141451 is an apocalyptic number.

1990141451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990141451 is an equidigital number, since it uses as much as digits as its factorization.

1990141451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 1990141451 is about 44611.0014570397. The cubic root of 1990141451 is about 1257.8474735101.

The spelling of 1990141451 in words is "one billion, nine hundred ninety million, one hundred forty-one thousand, four hundred fifty-one".