1965340923 has 16 divisors (see below), whose sum is σ = 3225175296. Its totient is φ = 1036663200.

The previous prime is 1965340903. The next prime is 1965340931. The reversal of 1965340923 is 3290435691.

It is a happy number.

It is not a de Polignac number, because 1965340923 - 2⁵ = 1965340891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1965340903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3599253 + ... + 3599798.

It is an arithmetic number, because the mean of its divisors is an integer number (201573456).

Almost surely, 2^1965340923 is an apocalyptic number.

1965340923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1965340923 is a deficient number, since it is larger than the sum of its proper divisors (1259834373).

1965340923 is a wasteful number, since it uses less digits than its factorization.

1965340923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7199074.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 1965340923 is about 44332.1657828715. The cubic root of 1965340923 is about 1252.6006491203.

The spelling of 1965340923 in words is "one billion, nine hundred sixty-five million, three hundred forty thousand, nine hundred twenty-three".