2154181370 has 32 divisors (see below), whose sum is σ = 4235310720. Its totient is φ = 782360640.

The previous prime is 2154181361. The next prime is 2154181397. The reversal of 2154181370 is 731814512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79379 + ... + 103001.

It is an arithmetic number, because the mean of its divisors is an integer number (132353460).

Almost surely, 2^2154181370 is an apocalyptic number.

2154181370 is a deficient number, since it is larger than the sum of its proper divisors (2081129350).

2154181370 is a wasteful number, since it uses less digits than its factorization.

2154181370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24470.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 2154181370 is about 46413.1594485874. The cubic root of 2154181370 is about 1291.4990425743.

Adding to 2154181370 its reverse (731814512), we get a palindrome (2885995882).

The spelling of 2154181370 in words is "two billion, one hundred fifty-four million, one hundred eighty-one thousand, three hundred seventy".