1986131153 has 4 divisors (see below), whose sum is σ = 2010060528. Its totient is φ = 1962201780.

The previous prime is 1986131141. The next prime is 1986131197. The reversal of 1986131153 is 3511316891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3511316891 = 15287 ⋅229693.

It is a cyclic number.

It is not a de Polignac number, because 1986131153 - 2⁴ = 1986131137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1986131113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11964563 + ... + 11964728.

It is an arithmetic number, because the mean of its divisors is an integer number (502515132).

Almost surely, 2^1986131153 is an apocalyptic number.

It is an amenable number.

1986131153 is a deficient number, since it is larger than the sum of its proper divisors (23929375).

1986131153 is an equidigital number, since it uses as much as digits as its factorization.

1986131153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23929374.

The product of its digits is 19440, while the sum is 38.

The square root of 1986131153 is about 44566.0313804135. The cubic root of 1986131153 is about 1257.0020168119.

The spelling of 1986131153 in words is "one billion, nine hundred eighty-six million, one hundred thirty-one thousand, one hundred fifty-three".