188020146 has 16 divisors (see below), whose sum is σ = 388171008. Its totient is φ = 60651600.

The previous prime is 188020127. The next prime is 188020159. The reversal of 188020146 is 641020881.

It is a super-2 number, since 2×188020146² = 70703150603722632, which contains 22 as substring.

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, 505245 + ... + 505616.

It is an arithmetic number, because the mean of its divisors is an integer number (24260688).

Almost surely, 2^188020146 is an apocalyptic number.

188020146 is an abundant number, since it is smaller than the sum of its proper divisors (200150862).

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

188020146 is a wasteful number, since it uses less digits than its factorization.

188020146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010897.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 188020146 is about 13712.0438301517. The cubic root of 188020146 is about 572.8858935393.

The spelling of 188020146 in words is "one hundred eighty-eight million, twenty thousand, one hundred forty-six".