1186996157 has 8 divisors (see below), whose sum is σ = 1198690680. Its totient is φ = 1175316480.

The previous prime is 1186996141. The next prime is 1186996171. The reversal of 1186996157 is 7516996811.

It can be written as a sum of positive squares in 4 ways, for example, as 526197721 + 660798436 = 22939^2 + 25706^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1186996157 - 2⁴ = 1186996141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1186996099 and 1186996108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1186996357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224213 + ... + 229445.

It is an arithmetic number, because the mean of its divisors is an integer number (149836335).

Almost surely, 2^1186996157 is an apocalyptic number.

It is an amenable number.

1186996157 is a deficient number, since it is larger than the sum of its proper divisors (11694523).

1186996157 is a wasteful number, since it uses less digits than its factorization.

1186996157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7423.

The product of its digits is 816480, while the sum is 53.

The square root of 1186996157 is about 34452.8105820120. The cubic root of 1186996157 is about 1058.8061071535.

The spelling of 1186996157 in words is "one billion, one hundred eighty-six million, nine hundred ninety-six thousand, one hundred fifty-seven".