1138248530 has 16 divisors (see below), whose sum is σ = 2052445824. Its totient is φ = 454499760.

The previous prime is 1138248479. The next prime is 1138248557. The reversal of 1138248530 is 358428311.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93962 + ... + 105381.

It is an arithmetic number, because the mean of its divisors is an integer number (128277864).

Almost surely, 2^1138248530 is an apocalyptic number.

1138248530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138248530 is a deficient number, since it is larger than the sum of its proper divisors (914197294).

1138248530 is a wasteful number, since it uses less digits than its factorization.

1138248530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199921.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1138248530 is about 33737.9390301186. The cubic root of 1138248530 is about 1044.1086635719.

The spelling of 1138248530 in words is "one billion, one hundred thirty-eight million, two hundred forty-eight thousand, five hundred thirty".