190560981 has 16 divisors (see below), whose sum is σ = 273913920. Its totient is φ = 117144960.

The previous prime is 190560977. The next prime is 190560991. The reversal of 190560981 is 189065091.

It is not a de Polignac number, because 190560981 - 2² = 190560977 is a prime.

It is a super-2 number, since 2×190560981² = 72626974959364722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190560941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47161 + ... + 51041.

It is an arithmetic number, because the mean of its divisors is an integer number (17119620).

Almost surely, 2^190560981 is an apocalyptic number.

It is an amenable number.

190560981 is a deficient number, since it is larger than the sum of its proper divisors (83352939).

190560981 is a wasteful number, since it uses less digits than its factorization.

190560981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 190560981 is about 13804.3826736294. The cubic root of 190560981 is about 575.4549453042.

The spelling of 190560981 in words is "one hundred ninety million, five hundred sixty thousand, nine hundred eighty-one".