1151645616 has 60 divisors (see below), whose sum is σ = 3516013800. Its totient is φ = 348983040.

The previous prime is 1151645611. The next prime is 1151645617. The reversal of 1151645616 is 6165461511.

1151645616 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 645 + 6 + 1 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1151645611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361941 + ... + 365108.

It is an arithmetic number, because the mean of its divisors is an integer number (58600230).

Almost surely, 2^1151645616 is an apocalyptic number.

1151645616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1151645616 is an abundant number, since it is smaller than the sum of its proper divisors (2364368184).

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

1151645616 is a wasteful number, since it uses less digits than its factorization.

1151645616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727074 (or 727065 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1151645616 is about 33935.9045260326. The cubic root of 1151645616 is about 1048.1890525829.

The spelling of 1151645616 in words is "one billion, one hundred fifty-one million, six hundred forty-five thousand, six hundred sixteen".