189849807 has 12 divisors (see below), whose sum is σ = 313402960. Its totient is φ = 108485568.

The previous prime is 189849799. The next prime is 189849809. The reversal of 189849807 is 708948981.

189849807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189849807 - 2³ = 189849799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189849809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1506682 + ... + 1506807.

Almost surely, 2^189849807 is an apocalyptic number.

189849807 is a deficient number, since it is larger than the sum of its proper divisors (123553153).

189849807 is a wasteful number, since it uses less digits than its factorization.

189849807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013502 (or 3013499 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 189849807 is about 13778.5996022818. The cubic root of 189849807 is about 574.7381865412.

The spelling of 189849807 in words is "one hundred eighty-nine million, eight hundred forty-nine thousand, eight hundred seven".