1985876349 has 8 divisors (see below), whose sum is σ = 2665371072. Its totient is φ = 1315149600.

The previous prime is 1985876329. The next prime is 1985876357. The reversal of 1985876349 is 9436785891.

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

It is not a de Polignac number, because 1985876349 - 2¹¹ = 1985874301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1985876292 and 1985876301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985876309) 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, 2191464 + ... + 2192369.

It is an arithmetic number, because the mean of its divisors is an integer number (333171384).

Almost surely, 2^1985876349 is an apocalyptic number.

It is an amenable number.

1985876349 is a deficient number, since it is larger than the sum of its proper divisors (679494723).

1985876349 is a wasteful number, since it uses less digits than its factorization.

1985876349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383987.

The product of its digits is 13063680, while the sum is 60.

The square root of 1985876349 is about 44563.1725643496. The cubic root of 1985876349 is about 1256.9482602344.

The spelling of 1985876349 in words is "one billion, nine hundred eighty-five million, eight hundred seventy-six thousand, three hundred forty-nine".