1990462306402 has 8 divisors (see below), whose sum is σ = 2985757314012. Its totient is φ = 995209868400.

The previous prime is 1990462306379. The next prime is 1990462306423. The reversal of 1990462306402 is 2046032640991.

It can be written as a sum of positive squares in 2 ways, for example, as 1887274235961 + 103188070441 = 1373781^2 + 321229^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10525249 + ... + 10712692.

Almost surely, 2^{1990462306402} is an apocalyptic number.

1990462306402 is a deficient number, since it is larger than the sum of its proper divisors (995295007610).

1990462306402 is a wasteful number, since it uses less digits than its factorization.

1990462306402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21284804.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 1990462306402 in words is "one trillion, nine hundred ninety billion, four hundred sixty-two million, three hundred six thousand, four hundred two".