1137749228 has 144 divisors (see below), whose sum is σ = 2702730240. Its totient is φ = 413481600.

The previous prime is 1137749161. The next prime is 1137749233. The reversal of 1137749228 is 8229477311.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1937951 + ... + 1938537.

It is an arithmetic number, because the mean of its divisors is an integer number (18768960).

Almost surely, 2^1137749228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1137749228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351365120).

1137749228 is an abundant number, since it is smaller than the sum of its proper divisors (1564981012).

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

1137749228 is a wasteful number, since it uses less digits than its factorization.

1137749228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 667 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 1137749228 is about 33730.5385074119. The cubic root of 1137749228 is about 1043.9559723167.

The spelling of 1137749228 in words is "one billion, one hundred thirty-seven million, seven hundred forty-nine thousand, two hundred twenty-eight".