1990301842454 has 8 divisors (see below), whose sum is σ = 2985497915760. Its totient is φ = 995135870536.

The previous prime is 1990301842453. The next prime is 1990301842517. The reversal of 1990301842454 is 4542481030991.

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

It is a super-2 number, since 2×1990301842454² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990301842453) 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, 7359314 + ... + 7624965.

It is an arithmetic number, because the mean of its divisors is an integer number (373187239470).

Almost surely, 2^{1990301842454} is an apocalyptic number.

1990301842454 is a deficient number, since it is larger than the sum of its proper divisors (995196073306).

1990301842454 is a wasteful number, since it uses less digits than its factorization.

1990301842454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15050694.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 1990301842454 in words is "one trillion, nine hundred ninety billion, three hundred one million, eight hundred forty-two thousand, four hundred fifty-four".