1945946465 has 16 divisors (see below), whose sum is σ = 2461123200. Its totient is φ = 1472971392.

The previous prime is 1945946423. The next prime is 1945946489. The reversal of 1945946465 is 5646495491.

It is a cyclic number.

It is not a de Polignac number, because 1945946465 - 2¹⁴ = 1945930081 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65741 + ... + 90629.

It is an arithmetic number, because the mean of its divisors is an integer number (153820200).

Almost surely, 2^1945946465 is an apocalyptic number.

It is an amenable number.

1945946465 is a deficient number, since it is larger than the sum of its proper divisors (515176735).

1945946465 is a wasteful number, since it uses less digits than its factorization.

1945946465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25736.

The product of its digits is 4665600, while the sum is 53.

The square root of 1945946465 is about 44112.8832088767. The cubic root of 1945946465 is about 1248.4666991599.

The spelling of 1945946465 in words is "one billion, nine hundred forty-five million, nine hundred forty-six thousand, four hundred sixty-five".