1148221380 has 48 divisors (see below), whose sum is σ = 3259073664. Its totient is φ = 301996800.

The previous prime is 1148221379. The next prime is 1148221391. The reversal of 1148221380 is 831228411.

1148221380 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126696 + ... + 135455.

It is an arithmetic number, because the mean of its divisors is an integer number (67897368).

Almost surely, 2^1148221380 is an apocalyptic number.

1148221380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1148221380 is an abundant number, since it is smaller than the sum of its proper divisors (2110852284).

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

1148221380 is a wasteful number, since it uses less digits than its factorization.

1148221380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262236 (or 262234 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1148221380 is about 33885.4154467671. The cubic root of 1148221380 is about 1047.1491464755.

Adding to 1148221380 its reverse (831228411), we get a palindrome (1979449791).

The spelling of 1148221380 in words is "one billion, one hundred forty-eight million, two hundred twenty-one thousand, three hundred eighty".