1151938220 has 12 divisors (see below), whose sum is σ = 2419070304. Its totient is φ = 460775280.

The previous prime is 1151938217. The next prime is 1151938247. The reversal of 1151938220 is 228391511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28798436 + ... + 28798475.

It is an arithmetic number, because the mean of its divisors is an integer number (201589192).

Almost surely, 2^1151938220 is an apocalyptic number.

1151938220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151938220 is an abundant number, since it is smaller than the sum of its proper divisors (1267132084).

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

1151938220 is a wasteful number, since it uses less digits than its factorization.

1151938220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57596920 (or 57596918 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1151938220 is about 33940.2153793991. The cubic root of 1151938220 is about 1048.2778178343.

The spelling of 1151938220 in words is "one billion, one hundred fifty-one million, nine hundred thirty-eight thousand, two hundred twenty".