189158026 has 16 divisors (see below), whose sum is σ = 296472384. Its totient is φ = 90345024.

The previous prime is 189157999. The next prime is 189158029. The reversal of 189158026 is 620851981.

It is a self number, because there is not a number n which added to its sum of digits gives 189158026.

It is not an unprimeable number, because it can be changed into a prime (189158029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38290 + ... + 42946.

It is an arithmetic number, because the mean of its divisors is an integer number (18529524).

Almost surely, 2^189158026 is an apocalyptic number.

189158026 is a deficient number, since it is larger than the sum of its proper divisors (107314358).

189158026 is a wasteful number, since it uses less digits than its factorization.

189158026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 189158026 is about 13753.4732340598. The cubic root of 189158026 is about 574.0392535891.

The spelling of 189158026 in words is "one hundred eighty-nine million, one hundred fifty-eight thousand, twenty-six".