1992491902402 has 8 divisors (see below), whose sum is σ = 3010239565200. Its totient is φ = 989078714004.

The previous prime is 1992491902381. The next prime is 1992491902411. The reversal of 1992491902402 is 2042091942991.

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

It is a super-2 number, since 2×1992491902402² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1992491902402.

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 3 ways as a sum of consecutive naturals, for example, 3583618252 + ... + 3583618807.

It is an arithmetic number, because the mean of its divisors is an integer number (376279945650).

Almost surely, 2^{1992491902402} is an apocalyptic number.

1992491902402 is a deficient number, since it is larger than the sum of its proper divisors (1017747662798).

1992491902402 is a wasteful number, since it uses less digits than its factorization.

1992491902402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167237200.

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 1992491902402 in words is "one trillion, nine hundred ninety-two billion, four hundred ninety-one million, nine hundred two thousand, four hundred two".