1148887740 has 576 divisors, whose sum is σ = 4564611072. Its totient is φ = 209848320.

The previous prime is 1148887723. The next prime is 1148887759. The reversal of 1148887740 is 477888411.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1148887740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 24444397 + ... + 24444443.

It is an arithmetic number, because the mean of its divisors is an integer number (7924672).

Almost surely, 2^1148887740 is an apocalyptic number.

1148887740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1148887740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2282305536).

1148887740 is an abundant number, since it is smaller than the sum of its proper divisors (3415723332).

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

1148887740 is a wasteful number, since it uses less digits than its factorization.

1148887740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 48.

The square root of 1148887740 is about 33895.2465693938. The cubic root of 1148887740 is about 1047.3516751799.

It can be divided in two parts, 1148 and 887740, that added together give a palindrome (888888).

The spelling of 1148887740 in words is "one billion, one hundred forty-eight million, eight hundred eighty-seven thousand, seven hundred forty".