749458189 has 4 divisors (see below), whose sum is σ = 754056256. Its totient is φ = 744860124.

The previous prime is 749458187. The next prime is 749458219. The reversal of 749458189 is 981854947.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981854947 = 2297 ⋅427451.

It is a cyclic number.

It is not a de Polignac number, because 749458189 - 2¹ = 749458187 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749458187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2298789 + ... + 2299114.

It is an arithmetic number, because the mean of its divisors is an integer number (188514064).

Almost surely, 2^749458189 is an apocalyptic number.

It is an amenable number.

749458189 is a deficient number, since it is larger than the sum of its proper divisors (4598067).

749458189 is a wasteful number, since it uses less digits than its factorization.

749458189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598066.

The product of its digits is 2903040, while the sum is 55.

The square root of 749458189 is about 27376.2340178484. The cubic root of 749458189 is about 908.3414579490.

The spelling of 749458189 in words is "seven hundred forty-nine million, four hundred fifty-eight thousand, one hundred eighty-nine".