1185797028 has 48 divisors (see below), whose sum is σ = 3043111680. Its totient is φ = 357095424.

The previous prime is 1185797009. The next prime is 1185797029. The reversal of 1185797028 is 8207975811.

It is a happy number.

It is a super-2 number, since 2×1185797028² = 2812229183227265568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1185797029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73533 + ... + 88196.

It is an arithmetic number, because the mean of its divisors is an integer number (63398160).

Almost surely, 2^1185797028 is an apocalyptic number.

It is an amenable number.

1185797028 is an abundant number, since it is smaller than the sum of its proper divisors (1857314652).

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

1185797028 is a wasteful number, since it uses less digits than its factorization.

1185797028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161796 (or 161794 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 48.

The square root of 1185797028 is about 34435.4037002617. The cubic root of 1185797028 is about 1058.4494441371.

The spelling of 1185797028 in words is "one billion, one hundred eighty-five million, seven hundred ninety-seven thousand, twenty-eight".