1155115650 has 48 divisors (see below), whose sum is σ = 3085052544. Its totient is φ = 284335680.

The previous prime is 1155115649. The next prime is 1155115667. The reversal of 1155115650 is 565115511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294234 + ... + 298133.

It is an arithmetic number, because the mean of its divisors is an integer number (64271928).

Almost surely, 2^1155115650 is an apocalyptic number.

1155115650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155115650 is an abundant number, since it is smaller than the sum of its proper divisors (1929936894).

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

1155115650 is a wasteful number, since it uses less digits than its factorization.

1155115650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592395 (or 592390 counting only the distinct ones).

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

The square root of 1155115650 is about 33986.9923647268. The cubic root of 1155115650 is about 1049.2407663386.

The spelling of 1155115650 in words is "one billion, one hundred fifty-five million, one hundred fifteen thousand, six hundred fifty".