1958216854 has 16 divisors (see below), whose sum is σ = 3205080720. Its totient is φ = 889896960.

The previous prime is 1958216833. The next prime is 1958216863. The reversal of 1958216854 is 4586128591.

It is a super-2 number, since 2×1958216854² = 7669226494579314632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1958216798 and 1958216807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136822 + ... + 150454.

It is an arithmetic number, because the mean of its divisors is an integer number (200317545).

Almost surely, 2^1958216854 is an apocalyptic number.

1958216854 is a deficient number, since it is larger than the sum of its proper divisors (1246863866).

1958216854 is a wasteful number, since it uses less digits than its factorization.

1958216854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20175.

The product of its digits is 691200, while the sum is 49.

The square root of 1958216854 is about 44251.7440786236. The cubic root of 1958216854 is about 1251.0853195791.

It can be divided in two parts, 1958 and 216854, that added together give a palindrome (218812).

The spelling of 1958216854 in words is "one billion, nine hundred fifty-eight million, two hundred sixteen thousand, eight hundred fifty-four".