1191606240 has 96 divisors (see below), whose sum is σ = 4094810496. Its totient is φ = 288872960.

The previous prime is 1191606233. The next prime is 1191606263. The reversal of 1191606240 is 426061911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 1191606198 and 1191606207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107562 + ... + 118121.

It is an arithmetic number, because the mean of its divisors is an integer number (42654276).

Almost surely, 2^1191606240 is an apocalyptic number.

1191606240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1191606240 is an abundant number, since it is smaller than the sum of its proper divisors (2903204256).

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

1191606240 is a wasteful number, since it uses less digits than its factorization.

1191606240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225712 (or 225704 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1191606240 is about 34519.6500561637. The cubic root of 1191606240 is about 1060.1750749151.

The spelling of 1191606240 in words is "one billion, one hundred ninety-one million, six hundred six thousand, two hundred forty".