189248805 has 40 divisors (see below), whose sum is σ = 347167392. Its totient is φ = 98576352.

The previous prime is 189248791. The next prime is 189248819. The reversal of 189248805 is 508842981.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (189248791) and next prime (189248819).

It is not a de Polignac number, because 189248805 - 2¹³ = 189240613 is a prime.

It is a super-3 number, since 3×189248805³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11982 + ... + 22848.

Almost surely, 2^189248805 is an apocalyptic number.

189248805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189248805 is a deficient number, since it is larger than the sum of its proper divisors (157918587).

189248805 is a wasteful number, since it uses less digits than its factorization.

189248805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10927 (or 10918 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 189248805 is about 13756.7730591153. The cubic root of 189248805 is about 574.1310681362.

The spelling of 189248805 in words is "one hundred eighty-nine million, two hundred forty-eight thousand, eight hundred five".