1190889940 has 12 divisors (see below), whose sum is σ = 2500868916. Its totient is φ = 476355968.

The previous prime is 1190889919. The next prime is 1190889943. The reversal of 1190889940 is 499880911.

It can be written as a sum of positive squares in 2 ways, for example, as 571975056 + 618914884 = 23916^2 + 24878^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1190889943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29772229 + ... + 29772268.

It is an arithmetic number, because the mean of its divisors is an integer number (208405743).

Almost surely, 2^1190889940 is an apocalyptic number.

1190889940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1190889940 is an abundant number, since it is smaller than the sum of its proper divisors (1309978976).

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

1190889940 is a wasteful number, since it uses less digits than its factorization.

1190889940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59544506 (or 59544504 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 49.

The square root of 1190889940 is about 34509.2732464768. The cubic root of 1190889940 is about 1059.9626010301.

The spelling of 1190889940 in words is "one billion, one hundred ninety million, eight hundred eighty-nine thousand, nine hundred forty".