2154915466 has 8 divisors (see below), whose sum is σ = 3526225344. Its totient is φ = 979507020.

The previous prime is 2154915443. The next prime is 2154915481. The reversal of 2154915466 is 6645194512.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48975330 + ... + 48975373.

It is an arithmetic number, because the mean of its divisors is an integer number (440778168).

Almost surely, 2^2154915466 is an apocalyptic number.

2154915466 is a deficient number, since it is larger than the sum of its proper divisors (1371309878).

2154915466 is a wasteful number, since it uses less digits than its factorization.

2154915466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97950716.

The product of its digits is 259200, while the sum is 43.

The square root of 2154915466 is about 46421.0670493473. The cubic root of 2154915466 is about 1291.6457304096.

The spelling of 2154915466 in words is "two billion, one hundred fifty-four million, nine hundred fifteen thousand, four hundred sixty-six".