1644534094 has 16 divisors (see below), whose sum is σ = 2967580800. Its totient is φ = 667705464.

The previous prime is 1644534041. The next prime is 1644534103. The reversal of 1644534094 is 4904354461.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3090964 + ... + 3091495.

It is an arithmetic number, because the mean of its divisors is an integer number (185473800).

Almost surely, 2^1644534094 is an apocalyptic number.

1644534094 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1644534094 is a deficient number, since it is larger than the sum of its proper divisors (1323046706).

1644534094 is a wasteful number, since it uses less digits than its factorization.

1644534094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182487.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 1644534094 is about 40552.8555591342. The cubic root of 1644534094 is about 1180.3594839806.

The spelling of 1644534094 in words is "one billion, six hundred forty-four million, five hundred thirty-four thousand, ninety-four".