1138449130 has 32 divisors (see below), whose sum is σ = 2522104704. Its totient is φ = 360300096.

The previous prime is 1138449121. The next prime is 1138449131. The reversal of 1138449130 is 319448311.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1138449131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624612 + ... + 626431.

It is an arithmetic number, because the mean of its divisors is an integer number (78815772).

Almost surely, 2^1138449130 is an apocalyptic number.

1138449130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138449130 is an abundant number, since it is smaller than the sum of its proper divisors (1383655574).

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

1138449130 is a wasteful number, since it uses less digits than its factorization.

1138449130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251070.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1138449130 is about 33740.9118134054. The cubic root of 1138449130 is about 1044.1699963680.

The spelling of 1138449130 in words is "one billion, one hundred thirty-eight million, four hundred forty-nine thousand, one hundred thirty".