1138740330 has 128 divisors (see below), whose sum is σ = 3374784000. Its totient is φ = 239468544.

The previous prime is 1138740307. The next prime is 1138740349. The reversal of 1138740330 is 330478311.

1138740330 = T₅₉₈₁ + T₅₉₈₂ + ... + T₆₀₄₃.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1225306 + ... + 1226234.

It is an arithmetic number, because the mean of its divisors is an integer number (26365500).

Almost surely, 2^1138740330 is an apocalyptic number.

1138740330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1138740330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1687392000).

1138740330 is an abundant number, since it is smaller than the sum of its proper divisors (2236043670).

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

1138740330 is a wasteful number, since it uses less digits than its factorization.

1138740330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 1138740330 is about 33745.2267735750. The cubic root of 1138740330 is about 1044.2590169996.

The spelling of 1138740330 in words is "one billion, one hundred thirty-eight million, seven hundred forty thousand, three hundred thirty".