1964509956 has 48 divisors (see below), whose sum is σ = 5096896000. Its totient is φ = 654358176.

The previous prime is 1964509933. The next prime is 1964509979. The reversal of 1964509956 is 6599054691.

It is an interprime number because it is at equal distance from previous prime (1964509933) and next prime (1964509979).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161421 + ... + 173163.

Almost surely, 2^1964509956 is an apocalyptic number.

It is an amenable number.

1964509956 is an abundant number, since it is smaller than the sum of its proper divisors (3132386044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1964509956 is a wasteful number, since it uses less digits than its factorization.

1964509956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13305 (or 13297 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 54.

The square root of 1964509956 is about 44322.7927369204. The cubic root of 1964509956 is about 1252.4240866178.

The spelling of 1964509956 in words is "one billion, nine hundred sixty-four million, five hundred nine thousand, nine hundred fifty-six".