1992420454 has 8 divisors (see below), whose sum is σ = 3001682160. Its totient is φ = 991859736.

The previous prime is 1992420433. The next prime is 1992420457. The reversal of 1992420454 is 4540242991.

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

It is a super-2 number, since 2×1992420454² = 7939478531035132232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992420457) 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 in 3 ways as a sum of consecutive naturals, for example, 2174674 + ... + 2175589.

It is an arithmetic number, because the mean of its divisors is an integer number (375210270).

Almost surely, 2^1992420454 is an apocalyptic number.

1992420454 is a deficient number, since it is larger than the sum of its proper divisors (1009261706).

1992420454 is a wasteful number, since it uses less digits than its factorization.

1992420454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350494.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1992420454 is about 44636.5372088830. The cubic root of 1992420454 is about 1258.3274301182.

The spelling of 1992420454 in words is "one billion, nine hundred ninety-two million, four hundred twenty thousand, four hundred fifty-four".