1136946989 has 8 divisors (see below), whose sum is σ = 1170996600. Its totient is φ = 1103072256.

The previous prime is 1136946977. The next prime is 1136946997. The reversal of 1136946989 is 9896496311.

It can be written as a sum of positive squares in 4 ways, for example, as 411075625 + 725871364 = 20275^2 + 26942^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1136946989 - 2²⁴ = 1120169773 is a prime.

It is a super-2 number, since 2×1136946989² = 2585296911592332242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1136946929) 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, 30464 + ... + 56585.

It is an arithmetic number, because the mean of its divisors is an integer number (146374575).

Almost surely, 2^1136946989 is an apocalyptic number.

It is an amenable number.

1136946989 is a deficient number, since it is larger than the sum of its proper divisors (34049611).

1136946989 is an equidigital number, since it uses as much as digits as its factorization.

1136946989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87439.

The product of its digits is 2519424, while the sum is 56.

The square root of 1136946989 is about 33718.6445308823. The cubic root of 1136946989 is about 1043.7105464953.

The spelling of 1136946989 in words is "one billion, one hundred thirty-six million, nine hundred forty-six thousand, nine hundred eighty-nine".