1158747440 has 40 divisors (see below), whose sum is σ = 2710646448. Its totient is φ = 460650240.

The previous prime is 1158747439. The next prime is 1158747467. The reversal of 1158747440 is 447478511.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31391 + ... + 57470.

Almost surely, 2^1158747440 is an apocalyptic number.

1158747440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158747440 is an abundant number, since it is smaller than the sum of its proper divisors (1551899008).

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

1158747440 is a wasteful number, since it uses less digits than its factorization.

1158747440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89037 (or 89031 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 1158747440 is about 34040.3795513505. The cubic root of 1158747440 is about 1050.3392524325.

The spelling of 1158747440 in words is "one billion, one hundred fifty-eight million, seven hundred forty-seven thousand, four hundred forty".