2154122046 has 16 divisors (see below), whose sum is σ = 4786938000. Its totient is φ = 718040664.

The previous prime is 2154122011. The next prime is 2154122077. The reversal of 2154122046 is 6402214512.

It is a super-2 number, since 2×2154122046² = 9280483578126452232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19945521 + ... + 19945628.

It is an arithmetic number, because the mean of its divisors is an integer number (299183625).

Almost surely, 2^2154122046 is an apocalyptic number.

2154122046 is an abundant number, since it is smaller than the sum of its proper divisors (2632815954).

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

2154122046 is a wasteful number, since it uses less digits than its factorization.

2154122046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39891160 (or 39891154 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2154122046 is about 46412.5203581965. The cubic root of 2154122046 is about 1291.4871869349.

Adding to 2154122046 its reverse (6402214512), we get a palindrome (8556336558).

The spelling of 2154122046 in words is "two billion, one hundred fifty-four million, one hundred twenty-two thousand, forty-six".