1156039437438 has 12 divisors (see below), whose sum is σ = 2504752114488. Its totient is φ = 385346479140.

The previous prime is 1156039437389. The next prime is 1156039437439. The reversal of 1156039437438 is 8347349306511.

1156039437438 is a `hidden beast` number, since 1 + 1 + 560 + 3 + 9 + 4 + 3 + 74 + 3 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156039437439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32112206578 + ... + 32112206613.

It is an arithmetic number, because the mean of its divisors is an integer number (208729342874).

Almost surely, 2^{1156039437438} is an apocalyptic number.

1156039437438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1156039437438 is an abundant number, since it is smaller than the sum of its proper divisors (1348712677050).

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

1156039437438 is a wasteful number, since it uses less digits than its factorization.

1156039437438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64224413199 (or 64224413196 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 1156039437438 in words is "one trillion, one hundred fifty-six billion, thirty-nine million, four hundred thirty-seven thousand, four hundred thirty-eight".