64191954 has 8 divisors (see below), whose sum is σ = 128383920. Its totient is φ = 21397316.

The previous prime is 64191943. The next prime is 64191971. The reversal of 64191954 is 45919146.

It is a sphenic number, since it is the product of 3 distinct primes.

64191954 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5349324 + ... + 5349335.

It is an arithmetic number, because the mean of its divisors is an integer number (16047990).

Almost surely, 2^64191954 is an apocalyptic number.

64191954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64191954 is a wasteful number, since it uses less digits than its factorization.

64191954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10698664.

The product of its digits is 38880, while the sum is 39.

The square root of 64191954 is about 8011.9881427770. The cubic root of 64191954 is about 400.3995050232.

It can be divided in two parts, 6 and 4191954, that added together give a triangular number (4191960 = T₂₈₉₅).

The spelling of 64191954 in words is "sixty-four million, one hundred ninety-one thousand, nine hundred fifty-four".