2154091801458 has 8 divisors (see below), whose sum is σ = 4308183602928. Its totient is φ = 718030600484.

The previous prime is 2154091801457. The next prime is 2154091801487. The reversal of 2154091801458 is 8541081904512.

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

2154091801458 is an admirable number.

It is a super-2 number, since 2×2154091801458² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154091801451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179507650116 + ... + 179507650127.

It is an arithmetic number, because the mean of its divisors is an integer number (538522950366).

Almost surely, 2^{2154091801458} is an apocalyptic number.

2154091801458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2154091801458 is a wasteful number, since it uses less digits than its factorization.

2154091801458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359015300248.

The product of its (nonzero) digits is 460800, while the sum is 48.

The spelling of 2154091801458 in words is "two trillion, one hundred fifty-four billion, ninety-one million, eight hundred one thousand, four hundred fifty-eight".