1091965248 has 84 divisors (see below), whose sum is σ = 3414479328. Its totient is φ = 330896640.

The previous prime is 1091965223. The next prime is 1091965249. The reversal of 1091965248 is 8425691901.

1091965248 is a `hidden beast` number, since 109 + 19 + 6 + 524 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091965249) 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, 79836 + ... + 92507.

Almost surely, 2^1091965248 is an apocalyptic number.

1091965248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1091965248 is an abundant number, since it is smaller than the sum of its proper divisors (2322514080).

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

1091965248 is a wasteful number, since it uses less digits than its factorization.

1091965248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172372 (or 172359 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1091965248 is about 33044.8974578527. The cubic root of 1091965248 is about 1029.7606029229.

It can be divided in two parts, 10919 and 65248, that added together give a palindrome (76167).

The spelling of 1091965248 in words is "one billion, ninety-one million, nine hundred sixty-five thousand, two hundred forty-eight".