1186990620 has 96 divisors (see below), whose sum is σ = 3454617600. Its totient is φ = 304193280.

The previous prime is 1186990603. The next prime is 1186990657. The reversal of 1186990620 is 260996811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274999 + ... + 279281.

It is an arithmetic number, because the mean of its divisors is an integer number (35985600).

Almost surely, 2^1186990620 is an apocalyptic number.

1186990620 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 1186990620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1727308800).

1186990620 is an abundant number, since it is smaller than the sum of its proper divisors (2267626980).

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

1186990620 is a wasteful number, since it uses less digits than its factorization.

1186990620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475 (or 4473 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1186990620 is about 34452.7302256294. The cubic root of 1186990620 is about 1058.8044608076.

The spelling of 1186990620 in words is "one billion, one hundred eighty-six million, nine hundred ninety thousand, six hundred twenty".