1987020360 has 96 divisors (see below), whose sum is σ = 6954587640. Its totient is φ = 489111552.

The previous prime is 1987020341. The next prime is 1987020383. The reversal of 1987020360 is 630207891.

It can be written as a sum of positive squares in 4 ways, for example, as 1111688964 + 875331396 = 33342^2 + 29586^2 .

It is a super-2 number, since 2×1987020360² = 7896499822109059200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207609 + ... + 216968.

Almost surely, 2^1987020360 is an apocalyptic number.

1987020360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1987020360 is an abundant number, since it is smaller than the sum of its proper divisors (4967567280).

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

1987020360 is a wasteful number, since it uses less digits than its factorization.

1987020360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424607 (or 424600 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1987020360 is about 44576.0065506097. The cubic root of 1987020360 is about 1257.1895788175.

The spelling of 1987020360 in words is "one billion, nine hundred eighty-seven million, twenty thousand, three hundred sixty".