1148891235780 has 48 divisors (see below), whose sum is σ = 3356760484224. Its totient is φ = 293050517760.

The previous prime is 1148891235769. The next prime is 1148891235787. The reversal of 1148891235780 is 875321988411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1148891235780.

It is not an unprimeable number, because it can be changed into a prime (1148891235787) 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, 416263561 + ... + 416266320.

It is an arithmetic number, because the mean of its divisors is an integer number (69932510088).

Almost surely, 2^{1148891235780} is an apocalyptic number.

1148891235780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1148891235780 is an abundant number, since it is smaller than the sum of its proper divisors (2207869248444).

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

1148891235780 is a wasteful number, since it uses less digits than its factorization.

1148891235780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832529916 (or 832529914 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 57.

The spelling of 1148891235780 in words is "one trillion, one hundred forty-eight billion, eight hundred ninety-one million, two hundred thirty-five thousand, seven hundred eighty".