1986842736 has 40 divisors (see below), whose sum is σ = 5702975760. Its totient is φ = 662280768.

The previous prime is 1986842729. The next prime is 1986842743. The reversal of 1986842736 is 6372486891.

It is an interprime number because it is at equal distance from previous prime (1986842729) and next prime (1986842743).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2299155 + ... + 2300018.

It is an arithmetic number, because the mean of its divisors is an integer number (142574394).

Almost surely, 2^1986842736 is an apocalyptic number.

1986842736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1986842736 is an abundant number, since it is smaller than the sum of its proper divisors (3716133024).

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

1986842736 is a wasteful number, since it uses less digits than its factorization.

1986842736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599190 (or 4599178 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 1986842736 is about 44574.0141337977. The cubic root of 1986842736 is about 1257.1521167460.

The spelling of 1986842736 in words is "one billion, nine hundred eighty-six million, eight hundred forty-two thousand, seven hundred thirty-six".