189896542 has 16 divisors (see below), whose sum is σ = 312141312. Its totient is φ = 85927320.

The previous prime is 189896537. The next prime is 189896561. The reversal of 189896542 is 245698981.

It is a self number, because there is not a number n which added to its sum of digits gives 189896542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14448 + ... + 24259.

It is an arithmetic number, because the mean of its divisors is an integer number (19508832).

Almost surely, 2^189896542 is an apocalyptic number.

189896542 is a deficient number, since it is larger than the sum of its proper divisors (122244770).

189896542 is a wasteful number, since it uses less digits than its factorization.

189896542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38943.

The product of its digits is 1244160, while the sum is 52.

The square root of 189896542 is about 13780.2954249900. The cubic root of 189896542 is about 574.7853434418.

The spelling of 189896542 in words is "one hundred eighty-nine million, eight hundred ninety-six thousand, five hundred forty-two".