1964054399 has 4 divisors (see below), whose sum is σ = 1965234264. Its totient is φ = 1962874536.

The previous prime is 1964054381. The next prime is 1964054413. The reversal of 1964054399 is 9934504691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9934504691 = 5879 ⋅1689829.

It is a cyclic number.

It is not a de Polignac number, because 1964054399 - 2¹² = 1964050303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964054329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587432 + ... + 590765.

It is an arithmetic number, because the mean of its divisors is an integer number (491308566).

Almost surely, 2^1964054399 is an apocalyptic number.

1964054399 is a deficient number, since it is larger than the sum of its proper divisors (1179865).

1964054399 is a wasteful number, since it uses less digits than its factorization.

1964054399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179864.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 1964054399 is about 44317.6533561966. The cubic root of 1964054399 is about 1252.3272694843.

The spelling of 1964054399 in words is "one billion, nine hundred sixty-four million, fifty-four thousand, three hundred ninety-nine".