2169997154 has 16 divisors (see below), whose sum is σ = 3520056960. Its totient is φ = 997343760.

The previous prime is 2169997091. The next prime is 2169997177. The reversal of 2169997154 is 4517999612.

It is a junction number, because it is equal to n+sod(n) for n = 2169997096 and 2169997105.

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, 168392 + ... + 180819.

It is an arithmetic number, because the mean of its divisors is an integer number (220003560).

Almost surely, 2^2169997154 is an apocalyptic number.

2169997154 is a deficient number, since it is larger than the sum of its proper divisors (1350059806).

2169997154 is a wasteful number, since it uses less digits than its factorization.

2169997154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349465.

The product of its digits is 1224720, while the sum is 53.

The square root of 2169997154 is about 46583.2282479435. The cubic root of 2169997154 is about 1294.6520243922.

The spelling of 2169997154 in words is "two billion, one hundred sixty-nine million, nine hundred ninety-seven thousand, one hundred fifty-four".