1091038752 has 36 divisors (see below), whose sum is σ = 3102642270. Its totient is φ = 363679488.

The previous prime is 1091038747. The next prime is 1091038829. The reversal of 1091038752 is 2578301901.

It can be written as a sum of positive squares in only one way, i.e., 737448336 + 353590416 = 27156^2 + 18804^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1893877 + ... + 1894452.

Almost surely, 2^1091038752 is an apocalyptic number.

1091038752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1091038752 is an abundant number, since it is smaller than the sum of its proper divisors (2011603518).

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

1091038752 is a wasteful number, since it uses less digits than its factorization.

1091038752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3788345 (or 3788334 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1091038752 is about 33030.8757377094. The cubic root of 1091038752 is about 1029.4692813690.

It can be divided in two parts, 109103 and 8752, that added together give a triangular number (117855 = T₄₈₅).

The spelling of 1091038752 in words is "one billion, ninety-one million, thirty-eight thousand, seven hundred fifty-two".