190940645 has 16 divisors (see below), whose sum is σ = 263475840. Its totient is φ = 130123584.

The previous prime is 190940623. The next prime is 190940647. The reversal of 190940645 is 546049091.

190940645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 190940645 - 2⁸ = 190940389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190940599 and 190940608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190940647) 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, 11030 + ... + 22439.

It is an arithmetic number, because the mean of its divisors is an integer number (16467240).

Almost surely, 2^190940645 is an apocalyptic number.

It is an amenable number.

190940645 is a deficient number, since it is larger than the sum of its proper divisors (72535195).

190940645 is a wasteful number, since it uses less digits than its factorization.

190940645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33644.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 190940645 is about 13818.1274056943. The cubic root of 190940645 is about 575.8368608285.

The spelling of 190940645 in words is "one hundred ninety million, nine hundred forty thousand, six hundred forty-five".