1964994093 has 16 divisors (see below), whose sum is σ = 3011486400. Its totient is φ = 1264823280.

The previous prime is 1964994077. The next prime is 1964994103. The reversal of 1964994093 is 3904994691.

1964994093 is a `hidden beast` number, since 196 + 49 + 9 + 409 + 3 = 666.

It is not a de Polignac number, because 1964994093 - 2⁴ = 1964994077 is a prime.

It is a super-2 number, since 2×1964994093² = 7722403571049785298, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964994013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254003 + ... + 1255568.

It is an arithmetic number, because the mean of its divisors is an integer number (188217900).

Almost surely, 2^1964994093 is an apocalyptic number.

It is an amenable number.

1964994093 is a deficient number, since it is larger than the sum of its proper divisors (1046492307).

1964994093 is a wasteful number, since it uses less digits than its factorization.

1964994093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509609 (or 2509603 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The square root of 1964994093 is about 44328.2538907185. The cubic root of 1964994093 is about 1252.5269613042.

The spelling of 1964994093 in words is "one billion, nine hundred sixty-four million, nine hundred ninety-four thousand, ninety-three".