190957281 has 16 divisors (see below), whose sum is σ = 260965056. Its totient is φ = 124137216.

The previous prime is 190957279. The next prime is 190957297. The reversal of 190957281 is 182759091.

190957281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190957281 - 2¹ = 190957279 is a prime.

It is a super-2 number, since 2×190957281² = 72929366333825922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190957681) 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, 132541 + ... + 133973.

It is an arithmetic number, because the mean of its divisors is an integer number (16310316).

Almost surely, 2^190957281 is an apocalyptic number.

It is an amenable number.

190957281 is a deficient number, since it is larger than the sum of its proper divisors (70007775).

190957281 is a wasteful number, since it uses less digits than its factorization.

190957281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 190957281 is about 13818.7293554798. The cubic root of 190957281 is about 575.8535839028.

The spelling of 190957281 in words is "one hundred ninety million, nine hundred fifty-seven thousand, two hundred eighty-one".