1196890156 has 96 divisors (see below), whose sum is σ = 2699827200. Its totient is φ = 450785280.

The previous prime is 1196890139. The next prime is 1196890183. The reversal of 1196890156 is 6510986911.

It is a happy 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, 1287900 + ... + 1288828.

It is an arithmetic number, because the mean of its divisors is an integer number (28123200).

Almost surely, 2^1196890156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1196890156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349913600).

1196890156 is an abundant number, since it is smaller than the sum of its proper divisors (1502937044).

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

1196890156 is a wasteful number, since it uses less digits than its factorization.

1196890156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 1196890156 is about 34596.1003004674. The cubic root of 1196890156 is about 1061.7398021701.

The spelling of 1196890156 in words is "one billion, one hundred ninety-six million, eight hundred ninety thousand, one hundred fifty-six".