1986545160 has 192 divisors, whose sum is σ = 6566676480. Its totient is φ = 520788480.

The previous prime is 1986545147. The next prime is 1986545173. The reversal of 1986545160 is 615456891.

1986545160 is a `hidden beast` number, since 1 + 9 + 86 + 54 + 516 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1986545147) and next prime (1986545173).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10400665 + ... + 10400855.

It is an arithmetic number, because the mean of its divisors is an integer number (34201440).

Almost surely, 2^1986545160 is an apocalyptic number.

1986545160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1986545160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3283338240).

1986545160 is an abundant number, since it is smaller than the sum of its proper divisors (4580131320).

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

1986545160 is a wasteful number, since it uses less digits than its factorization.

1986545160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1986545160 is about 44570.6760101302. The cubic root of 1986545160 is about 1257.0893510039.

It can be divided in two parts, 19865 and 45160, that added together give a square (65025 = 255²).

The spelling of 1986545160 in words is "one billion, nine hundred eighty-six million, five hundred forty-five thousand, one hundred sixty".