1802650661542 has 8 divisors (see below), whose sum is σ = 2703983574600. Its totient is φ = 901322803344.

The previous prime is 1802650661521. The next prime is 1802650661543. The reversal of 1802650661542 is 2451660562081.

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

It is a junction number, because it is equal to n+sod(n) for n = 1802650661492 and 1802650661501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802650661543) 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, 189567 + ... + 1908202.

It is an arithmetic number, because the mean of its divisors is an integer number (337997946825).

Almost surely, 2^{1802650661542} is an apocalyptic number.

1802650661542 is a deficient number, since it is larger than the sum of its proper divisors (901332913058).

1802650661542 is a wasteful number, since it uses less digits than its factorization.

1802650661542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527430.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 1802650661542 in words is "one trillion, eight hundred two billion, six hundred fifty million, six hundred sixty-one thousand, five hundred forty-two".