199657054 has 32 divisors (see below), whose sum is σ = 329472000. Its totient is φ = 90375264.

The previous prime is 199657049. The next prime is 199657063. The reversal of 199657054 is 450756991.

It is a junction number, because it is equal to n+sod(n) for n = 199656995 and 199657013.

It is a congruent number.

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, 112627 + ... + 114385.

It is an arithmetic number, because the mean of its divisors is an integer number (10296000).

Almost surely, 2^199657054 is an apocalyptic number.

199657054 is a deficient number, since it is larger than the sum of its proper divisors (129814946).

199657054 is a wasteful number, since it uses less digits than its factorization.

199657054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 199657054 is about 14130.0054493974. The cubic root of 199657054 is about 584.4690963427.

The spelling of 199657054 in words is "one hundred ninety-nine million, six hundred fifty-seven thousand, fifty-four".