193920955 has 16 divisors (see below), whose sum is σ = 246723840. Its totient is φ = 145815552.

The previous prime is 193920953. The next prime is 193920971. The reversal of 193920955 is 559029391.

It is a cyclic number.

It is not a de Polignac number, because 193920955 - 2¹ = 193920953 is a prime.

It is a super-2 number, since 2×193920955² = 75210673576224050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (193920953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109366 + ... + 111124.

It is an arithmetic number, because the mean of its divisors is an integer number (15420240).

Almost surely, 2^193920955 is an apocalyptic number.

193920955 is a deficient number, since it is larger than the sum of its proper divisors (52802885).

193920955 is a wasteful number, since it uses less digits than its factorization.

193920955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078.

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 193920955 is about 13925.5504379540. The cubic root of 193920955 is about 578.8174030938.

The spelling of 193920955 in words is "one hundred ninety-three million, nine hundred twenty thousand, nine hundred fifty-five".