1851942198148 has 24 divisors (see below), whose sum is σ = 3823364539904. Its totient is φ = 768086625600.

The previous prime is 1851942198143. The next prime is 1851942198157. The reversal of 1851942198148 is 8418912491581.

It is not an unprimeable number, because it can be changed into a prime (1851942198143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1066786113 + ... + 1066787848.

Almost surely, 2^{1851942198148} is an apocalyptic number.

It is an amenable number.

1851942198148 is an abundant number, since it is smaller than the sum of its proper divisors (1971422341756).

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

1851942198148 is a wasteful number, since it uses less digits than its factorization.

1851942198148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133574003 (or 2133574001 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 61.

The spelling of 1851942198148 in words is "one trillion, eight hundred fifty-one billion, nine hundred forty-two million, one hundred ninety-eight thousand, one hundred forty-eight".