199157794 has 8 divisors (see below), whose sum is σ = 325894608. Its totient is φ = 90526260.

The previous prime is 199157767. The next prime is 199157837. The reversal of 199157794 is 497751991.

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, 4526292 + ... + 4526335.

It is an arithmetic number, because the mean of its divisors is an integer number (40736826).

Almost surely, 2^199157794 is an apocalyptic number.

199157794 is a deficient number, since it is larger than the sum of its proper divisors (126736814).

199157794 is a wasteful number, since it uses less digits than its factorization.

199157794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9052640.

The product of its digits is 714420, while the sum is 52.

The square root of 199157794 is about 14112.3277314552. The cubic root of 199157794 is about 583.9815176017.

The spelling of 199157794 in words is "one hundred ninety-nine million, one hundred fifty-seven thousand, seven hundred ninety-four".