1156515066 has 192 divisors, whose sum is σ = 3229873920. Its totient is φ = 291133440.

The previous prime is 1156515053. The next prime is 1156515071. The reversal of 1156515066 is 6605156511.

1156515066 = 224² + 225² + ... + 1515².

It is a self number, because there is not a number n which added to its sum of digits gives 1156515066.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6389496 + ... + 6389676.

It is an arithmetic number, because the mean of its divisors is an integer number (16822260).

Almost surely, 2^1156515066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156515066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614936960).

1156515066 is an abundant number, since it is smaller than the sum of its proper divisors (2073358854).

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

1156515066 is a wasteful number, since it uses less digits than its factorization.

1156515066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1156515066 is about 34007.5736564666. The cubic root of 1156515066 is about 1049.6643117385.

The spelling of 1156515066 in words is "one billion, one hundred fifty-six million, five hundred fifteen thousand, sixty-six".