1850166668537 has 8 divisors (see below), whose sum is σ = 2020429528992. Its totient is φ = 1680248123200.

The previous prime is 1850166668521. The next prime is 1850166668543. The reversal of 1850166668537 is 7358666610581.

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

It is a cyclic number.

It is not a de Polignac number, because 1850166668537 - 2⁴ = 1850166668521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1850166668537.

It is not an unprimeable number, because it can be changed into a prime (1850166668237) 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, 86067539 + ... + 86089032.

It is an arithmetic number, because the mean of its divisors is an integer number (252553691124).

Almost surely, 2^{1850166668537} is an apocalyptic number.

It is an amenable number.

1850166668537 is a deficient number, since it is larger than the sum of its proper divisors (170262860455).

1850166668537 is a wasteful number, since it uses less digits than its factorization.

1850166668537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172157559.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 1850166668537 in words is "one trillion, eight hundred fifty billion, one hundred sixty-six million, six hundred sixty-eight thousand, five hundred thirty-seven".