1465445641 has 16 divisors (see below), whose sum is σ = 1636037568. Its totient is φ = 1312259520.

The previous prime is 1465445627. The next prime is 1465445687.

It is a happy number.

1465445641 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1465445641 - 2²³ = 1457057033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1465445594 and 1465445603.

It is not an unprimeable number, because it can be changed into a prime (1465445141) 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, 80961 + ... + 97393.

It is an arithmetic number, because the mean of its divisors is an integer number (102252348).

Almost surely, 2^1465445641 is an apocalyptic number.

1465445641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1465445641 is a deficient number, since it is larger than the sum of its proper divisors (170591927).

1465445641 is an equidigital number, since it uses as much as digits as its factorization.

1465445641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16533 (or 16511 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The square root of 1465445641 is about 38281.1394945344. The cubic root of 1465445641 is about 1135.8558988780.

The spelling of 1465445641 in words is "one billion, four hundred sixty-five million, four hundred forty-five thousand, six hundred forty-one".