1964919015 has 12 divisors (see below), whose sum is σ = 3405859704. Its totient is φ = 1047956784.

The previous prime is 1964919001. The next prime is 1964919017. The reversal of 1964919015 is 5109194691.

It is not a de Polignac number, because 1964919015 - 2⁷ = 1964918887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 43664867 = 1964919015 / (1 + 9 + 6 + 4 + 9 + 1 + 9 + 0 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964919017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21832389 + ... + 21832478.

It is an arithmetic number, because the mean of its divisors is an integer number (283821642).

Almost surely, 2^1964919015 is an apocalyptic number.

1964919015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1964919015 is a deficient number, since it is larger than the sum of its proper divisors (1440940689).

1964919015 is a wasteful number, since it uses less digits than its factorization.

1964919015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43664878 (or 43664875 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The square root of 1964919015 is about 44327.4070412426. The cubic root of 1964919015 is about 1252.5110090227.

The spelling of 1964919015 in words is "one billion, nine hundred sixty-four million, nine hundred nineteen thousand, fifteen".