1189072290 has 32 divisors (see below), whose sum is σ = 3261456000. Its totient is φ = 271787904.

The previous prime is 1189072277. The next prime is 1189072321. The reversal of 1189072290 is 922709811.

It is a Curzon 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, 2830915 + ... + 2831334.

It is an arithmetic number, because the mean of its divisors is an integer number (101920500).

Almost surely, 2^1189072290 is an apocalyptic number.

1189072290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1189072290 is an abundant number, since it is smaller than the sum of its proper divisors (2072383710).

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

1189072290 is a wasteful number, since it uses less digits than its factorization.

1189072290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662266.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 1189072290 is about 34482.9275149312. The cubic root of 1189072290 is about 1059.4230543721.

The spelling of 1189072290 in words is "one billion, one hundred eighty-nine million, seventy-two thousand, two hundred ninety".