1148780238 has 32 divisors (see below), whose sum is σ = 2329689600. Its totient is φ = 377584896.

The previous prime is 1148780231. The next prime is 1148780267. The reversal of 1148780238 is 8320878411.

It is a self number, because there is not a number n which added to its sum of digits gives 1148780238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148780231) 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, 607198 + ... + 609086.

It is an arithmetic number, because the mean of its divisors is an integer number (72802800).

Almost surely, 2^1148780238 is an apocalyptic number.

1148780238 is an abundant number, since it is smaller than the sum of its proper divisors (1180909362).

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

1148780238 is a wasteful number, since it uses less digits than its factorization.

1148780238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 1148780238 is about 33893.6607347156. The cubic root of 1148780238 is about 1047.3190070878.

The spelling of 1148780238 in words is "one billion, one hundred forty-eight million, seven hundred eighty thousand, two hundred thirty-eight".