1099162240 has 64 divisors (see below), whose sum is σ = 2866583520. Its totient is φ = 399692800.

The previous prime is 1099162237. The next prime is 1099162279. The reversal of 1099162240 is 422619901.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1099162196 and 1099162205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71026 + ... + 85105.

Almost surely, 2^1099162240 is an apocalyptic number.

1099162240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099162240 is an abundant number, since it is smaller than the sum of its proper divisors (1767421280).

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

1099162240 is a wasteful number, since it uses less digits than its factorization.

1099162240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156161 (or 156149 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1099162240 is about 33153.6157907399. The cubic root of 1099162240 is about 1032.0179873875.

The spelling of 1099162240 in words is "one billion, ninety-nine million, one hundred sixty-two thousand, two hundred forty".