1990301849394 has 32 divisors (see below), whose sum is σ = 4037363740800. Its totient is φ = 653977161600.

The previous prime is 1990301849387. The next prime is 1990301849479. The reversal of 1990301849394 is 4939481030991.

It is a happy number.

It is a super-2 number, since 2×1990301849394² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2092284 + ... + 2891064.

It is an arithmetic number, because the mean of its divisors is an integer number (126167616900).

Almost surely, 2^{1990301849394} is an apocalyptic number.

1990301849394 is an abundant number, since it is smaller than the sum of its proper divisors (2047061891406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1990301849394 is a wasteful number, since it uses less digits than its factorization.

1990301849394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804706.

The product of its (nonzero) digits is 7558272, while the sum is 60.

The spelling of 1990301849394 in words is "one trillion, nine hundred ninety billion, three hundred one million, eight hundred forty-nine thousand, three hundred ninety-four".