1186990 has 32 divisors (see below), whose sum is σ = 2525184. Its totient is φ = 393120.

The previous prime is 1186981. The next prime is 1187003. The reversal of 1186990 is 996811.

1186990 = T₁₁₁ + T₁₁₂ + ... + T₂₀₃.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1897 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (78912).

2^1186990 is an apocalyptic number.

1186990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1186990 is an abundant number, since it is smaller than the sum of its proper divisors (1338194).

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

1186990 is a wasteful number, since it uses less digits than its factorization.

1186990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1186990 is about 1089.4907067066. The cubic root of 1186990 is about 105.8804276459.

The spelling of 1186990 in words is "one million, one hundred eighty-six thousand, nine hundred ninety".