190781464 has 16 divisors (see below), whose sum is σ = 358057800. Its totient is φ = 95299392.

The previous prime is 190781453. The next prime is 190781467. The reversal of 190781464 is 464187091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190781467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2094 + ... + 19645.

Almost surely, 2^190781464 is an apocalyptic number.

It is an amenable number.

190781464 is a deficient number, since it is larger than the sum of its proper divisors (167276336).

190781464 is a wasteful number, since it uses less digits than its factorization.

190781464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22842 (or 22838 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 190781464 is about 13812.3663432447. The cubic root of 190781464 is about 575.6767975252.

The spelling of 190781464 in words is "one hundred ninety million, seven hundred eighty-one thousand, four hundred sixty-four".