1934405649 has 48 divisors (see below), whose sum is σ = 3123394560. Its totient is φ = 1143600480.

The previous prime is 1934405573. The next prime is 1934405653. The reversal of 1934405649 is 9465044391.

1934405649 is a `hidden beast` number, since 19 + 34 + 40 + 564 + 9 = 666.

It is not a de Polignac number, because 1934405649 - 2⁸ = 1934405393 is a prime.

It is a super-2 number, since 2×1934405649² = 7483850429766222402, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1934405659) 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 47 ways as a sum of consecutive naturals, for example, 2042194 + ... + 2043140.

It is an arithmetic number, because the mean of its divisors is an integer number (65070720).

Almost surely, 2^1934405649 is an apocalyptic number.

It is an amenable number.

1934405649 is a deficient number, since it is larger than the sum of its proper divisors (1188988911).

1934405649 is a wasteful number, since it uses less digits than its factorization.

1934405649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1934405649 is about 43981.8786433686. The cubic root of 1934405649 is about 1245.9937118957.

The spelling of 1934405649 in words is "one billion, nine hundred thirty-four million, four hundred five thousand, six hundred forty-nine".