189511038 has 24 divisors (see below), whose sum is σ = 412144200. Its totient is φ = 62933904.

The previous prime is 189511033. The next prime is 189511043. The reversal of 189511038 is 830115981.

It is an interprime number because it is at equal distance from previous prime (189511033) and next prime (189511043).

It is a junction number, because it is equal to n+sod(n) for n = 189510993 and 189511011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189511031) 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, 14728 + ... + 24411.

It is an arithmetic number, because the mean of its divisors is an integer number (17172675).

Almost surely, 2^189511038 is an apocalyptic number.

189511038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189511038 is an abundant number, since it is smaller than the sum of its proper divisors (222633162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189511038 is a wasteful number, since it uses less digits than its factorization.

189511038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39416 (or 39413 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 189511038 is about 13766.3008103121. The cubic root of 189511038 is about 574.3961277164.

It can be divided in two parts, 18 and 9511038, that added together give a square (9511056 = 3084²).

The spelling of 189511038 in words is "one hundred eighty-nine million, five hundred eleven thousand, thirty-eight".