1986849024 has 144 divisors (see below), whose sum is σ = 5780759040. Its totient is φ = 603095040.

The previous prime is 1986849023. The next prime is 1986849031. The reversal of 1986849024 is 4209486891.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986849023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402282 + ... + 407190.

It is an arithmetic number, because the mean of its divisors is an integer number (40144160).

Almost surely, 2^1986849024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1986849024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2890379520).

1986849024 is an abundant number, since it is smaller than the sum of its proper divisors (3793910016).

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

1986849024 is a wasteful number, since it uses less digits than its factorization.

1986849024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976 (or 4962 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1986849024 is about 44574.0846681118. The cubic root of 1986849024 is about 1257.1534429648.

The spelling of 1986849024 in words is "one billion, nine hundred eighty-six million, eight hundred forty-nine thousand, twenty-four".