1158743880 has 320 divisors, whose sum is σ = 4687056000. Its totient is φ = 250822656.

The previous prime is 1158743879. The next prime is 1158743881. The reversal of 1158743880 is 883478511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1158743879) and next prime (1158743881).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158743881) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 429576 + ... + 432264.

It is an arithmetic number, because the mean of its divisors is an integer number (14647050).

Almost surely, 2^1158743880 is an apocalyptic number.

1158743880 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 1158743880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2343528000).

1158743880 is an abundant number, since it is smaller than the sum of its proper divisors (3528312120).

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

1158743880 is a wasteful number, since it uses less digits than its factorization.

1158743880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 1158743880 is about 34040.3272604715. The cubic root of 1158743880 is about 1050.3381767849.

The spelling of 1158743880 in words is "one billion, one hundred fifty-eight million, seven hundred forty-three thousand, eight hundred eighty".