2154620332 has 12 divisors (see below), whose sum is σ = 3807193936. Its totient is φ = 1066850640.

The previous prime is 2154620317. The next prime is 2154620333. The reversal of 2154620332 is 2330264512.

It is a self number, because there is not a number n which added to its sum of digits gives 2154620332.

It is not an unprimeable number, because it can be changed into a prime (2154620333) 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, 2614419 + ... + 2615242.

Almost surely, 2^2154620332 is an apocalyptic number.

It is an amenable number.

2154620332 is a deficient number, since it is larger than the sum of its proper divisors (1652573604).

2154620332 is a wasteful number, since it uses less digits than its factorization.

2154620332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229768 (or 5229766 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2154620332 is about 46417.8880605311. Note that the first 3 decimals coincide. The cubic root of 2154620332 is about 1291.5867604281.

Adding to 2154620332 its reverse (2330264512), we get a palindrome (4484884844).

The spelling of 2154620332 in words is "two billion, one hundred fifty-four million, six hundred twenty thousand, three hundred thirty-two".