191793045 has 16 divisors (see below), whose sum is σ = 307040832. Its totient is φ = 102232320.

The previous prime is 191793023. The next prime is 191793047. The reversal of 191793045 is 540397191.

It is a happy number.

It is not a de Polignac number, because 191793045 - 2⁷ = 191792917 is a prime.

It is a super-2 number, since 2×191793045² = 73569144220744050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191792994 and 191793012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191793047) 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, 48669 + ... + 52461.

It is an arithmetic number, because the mean of its divisors is an integer number (19190052).

Almost surely, 2^191793045 is an apocalyptic number.

191793045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

191793045 is a deficient number, since it is larger than the sum of its proper divisors (115247787).

191793045 is a wasteful number, since it uses less digits than its factorization.

191793045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7172.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 191793045 is about 13848.9366017756. The cubic root of 191793045 is about 576.6924752985.

The spelling of 191793045 in words is "one hundred ninety-one million, seven hundred ninety-three thousand, forty-five".