2158500454 has 32 divisors (see below), whose sum is σ = 3576728736. Its totient is φ = 968785920.

The previous prime is 2158500451. The next prime is 2158500499. The reversal of 2158500454 is 4540058512.

It is a happy number.

It is a super-2 number, since 2×2158500454² = 9318248419836412232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158500451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1230442 + ... + 1232194.

It is an arithmetic number, because the mean of its divisors is an integer number (111772773).

Almost surely, 2^2158500454 is an apocalyptic number.

2158500454 is a deficient number, since it is larger than the sum of its proper divisors (1418228282).

2158500454 is a wasteful number, since it uses less digits than its factorization.

2158500454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440.

The product of its (nonzero) digits is 32000, while the sum is 34.

The square root of 2158500454 is about 46459.6648072282. The cubic root of 2158500454 is about 1292.3616082946.

Adding to 2158500454 its reverse (4540058512), we get a palindrome (6698558966).

The spelling of 2158500454 in words is "two billion, one hundred fifty-eight million, five hundred thousand, four hundred fifty-four".