1191640096 has 12 divisors (see below), whose sum is σ = 2346041502. Its totient is φ = 595820032.

The previous prime is 1191640049. The next prime is 1191640133. The reversal of 1191640096 is 6900461911.

It can be written as a sum of positive squares in only one way, i.e., 1172103696 + 19536400 = 34236^2 + 4420^2 .

It is a super-2 number, since 2×1191640096² = 2840012236789778432, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 18619345 + ... + 18619408.

Almost surely, 2^1191640096 is an apocalyptic number.

1191640096 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1191640096 is a deficient number, since it is larger than the sum of its proper divisors (1154401406).

1191640096 is an equidigital number, since it uses as much as digits as its factorization.

1191640096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37238763 (or 37238755 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1191640096 is about 34520.1404400388. The cubic root of 1191640096 is about 1060.1851154095.

The spelling of 1191640096 in words is "one billion, one hundred ninety-one million, six hundred forty thousand, ninety-six".