1158105381 has 8 divisors (see below), whose sum is σ = 1544299680. Its totient is φ = 771990672.

The previous prime is 1158105379. The next prime is 1158105419. The reversal of 1158105381 is 1835018511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1158105381 - 2¹ = 1158105379 is a prime.

It is a super-2 number, since 2×1158105381² = 2682416147002310322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158105281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38775 + ... + 61803.

It is an arithmetic number, because the mean of its divisors is an integer number (193037460).

Almost surely, 2^1158105381 is an apocalyptic number.

It is an amenable number.

1158105381 is a deficient number, since it is larger than the sum of its proper divisors (386194299).

1158105381 is a wasteful number, since it uses less digits than its factorization.

1158105381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39795.

The product of its (nonzero) digits is 4800, while the sum is 33.

The square root of 1158105381 is about 34030.9474008585. The cubic root of 1158105381 is about 1050.1452198238.

The spelling of 1158105381 in words is "one billion, one hundred fifty-eight million, one hundred five thousand, three hundred eighty-one".