1965463940 has 24 divisors (see below), whose sum is σ = 4502699712. Its totient is φ = 714714080.

The previous prime is 1965463901. The next prime is 1965463979. The reversal of 1965463940 is 493645691.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1965463901) and next prime (1965463979).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4466744 + ... + 4467183.

It is an arithmetic number, because the mean of its divisors is an integer number (187612488).

Almost surely, 2^1965463940 is an apocalyptic number.

1965463940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1965463940 is an abundant number, since it is smaller than the sum of its proper divisors (2537235772).

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

1965463940 is a wasteful number, since it uses less digits than its factorization.

1965463940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933947 (or 8933945 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 1965463940 is about 44333.5532074748. The cubic root of 1965463940 is about 1252.6267833408.

The spelling of 1965463940 in words is "one billion, nine hundred sixty-five million, four hundred sixty-three thousand, nine hundred forty".