1902919142798 has 16 divisors (see below), whose sum is σ = 2856104948736. Its totient is φ = 950884327680.

The previous prime is 1902919142797. The next prime is 1902919142809. The reversal of 1902919142798 is 8972419192091.

It is a happy number.

It is a super-2 number, since 2×1902919142798² (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 1902919142798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902919142797) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24822515 + ... + 24899057.

It is an arithmetic number, because the mean of its divisors is an integer number (178506559296).

Almost surely, 2^{1902919142798} is an apocalyptic number.

1902919142798 is a deficient number, since it is larger than the sum of its proper divisors (953185805938).

1902919142798 is a wasteful number, since it uses less digits than its factorization.

1902919142798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83899.

The product of its (nonzero) digits is 5878656, while the sum is 62.

The spelling of 1902919142798 in words is "one trillion, nine hundred two billion, nine hundred nineteen million, one hundred forty-two thousand, seven hundred ninety-eight".