1151555106 has 64 divisors (see below), whose sum is σ = 2527822080. Its totient is φ = 347585280.

The previous prime is 1151555081. The next prime is 1151555147. The reversal of 1151555106 is 6015551511.

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, 1489336 + ... + 1490108.

It is an arithmetic number, because the mean of its divisors is an integer number (39497220).

Almost surely, 2^1151555106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151555106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263911040).

1151555106 is an abundant number, since it is smaller than the sum of its proper divisors (1376266974).

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

1151555106 is a wasteful number, since it uses less digits than its factorization.

1151555106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131.

The product of its (nonzero) digits is 3750, while the sum is 30.

The square root of 1151555106 is about 33934.5709564745. The cubic root of 1151555106 is about 1048.1615921456.

The spelling of 1151555106 in words is "one billion, one hundred fifty-one million, five hundred fifty-five thousand, one hundred six".