1964878463 has 4 divisors (see below), whose sum is σ = 1985135040. Its totient is φ = 1944621888.

The previous prime is 1964878429. The next prime is 1964878469. The reversal of 1964878463 is 3648784691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1964878463 - 2¹² = 1964874367 is a prime.

It is a super-2 number, since 2×1964878463² = 7721494748722484738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1964878399 and 1964878408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964878469) 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, 10128143 + ... + 10128336.

It is an arithmetic number, because the mean of its divisors is an integer number (496283760).

Almost surely, 2^1964878463 is an apocalyptic number.

1964878463 is a deficient number, since it is larger than the sum of its proper divisors (20256577).

1964878463 is an equidigital number, since it uses as much as digits as its factorization.

1964878463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20256576.

The product of its digits is 6967296, while the sum is 56.

The square root of 1964878463 is about 44326.9496243538. The cubic root of 1964878463 is about 1252.5023925224.

The spelling of 1964878463 in words is "one billion, nine hundred sixty-four million, eight hundred seventy-eight thousand, four hundred sixty-three".