1619955901842 has 8 divisors (see below), whose sum is σ = 3239911803696. Its totient is φ = 539985300612.

The previous prime is 1619955901819. The next prime is 1619955901853. The reversal of 1619955901842 is 2481095599161.

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

1619955901842 is an admirable number.

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, 134996325148 + ... + 134996325159.

It is an arithmetic number, because the mean of its divisors is an integer number (404988975462).

Almost surely, 2^{1619955901842} is an apocalyptic number.

1619955901842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1619955901842 is a wasteful number, since it uses less digits than its factorization.

1619955901842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269992650312.

The product of its (nonzero) digits is 6998400, while the sum is 60.

The spelling of 1619955901842 in words is "one trillion, six hundred nineteen billion, nine hundred fifty-five million, nine hundred one thousand, eight hundred forty-two".