1985106049692 has 36 divisors (see below), whose sum is σ = 4791698735880. Its totient is φ = 638876246624.

The previous prime is 1985106049627. The next prime is 1985106049697. The reversal of 1985106049692 is 2969406015891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985106049697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26245633 + ... + 26321159.

Almost surely, 2^{1985106049692} is an apocalyptic number.

1985106049692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1985106049692 is an abundant number, since it is smaller than the sum of its proper divisors (2806592686188).

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

1985106049692 is an frugal number, since it uses more digits than its factorization.

1985106049692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151090 (or 75561 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 60.

The spelling of 1985106049692 in words is "one trillion, nine hundred eighty-five billion, one hundred six million, forty-nine thousand, six hundred ninety-two".