1118858621 has 8 divisors (see below), whose sum is σ = 1236181824. Its totient is φ = 1007258560.

The previous prime is 1118858597. The next prime is 1118858627. The reversal of 1118858621 is 1268588111.

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

It is a cyclic number.

It is not a de Polignac number, because 1118858621 - 2⁶ = 1118858557 is a prime.

It is a super-2 number, since 2×1118858621² = 2503689227572043282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118858627) 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, 1430375 + ... + 1431156.

It is an arithmetic number, because the mean of its divisors is an integer number (154522728).

Almost surely, 2^1118858621 is an apocalyptic number.

It is an amenable number.

1118858621 is a deficient number, since it is larger than the sum of its proper divisors (117323203).

1118858621 is a wasteful number, since it uses less digits than its factorization.

1118858621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861571.

The product of its digits is 30720, while the sum is 41.

The square root of 1118858621 is about 33449.3441041824. The cubic root of 1118858621 is about 1038.1459264351.

The spelling of 1118858621 in words is "one billion, one hundred eighteen million, eight hundred fifty-eight thousand, six hundred twenty-one".