1345161216 has 96 divisors (see below), whose sum is σ = 4098669120. Its totient is φ = 384319488.

The previous prime is 1345161179. The next prime is 1345161263. The reversal of 1345161216 is 6121615431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

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, 27370 + ... + 58646.

It is an arithmetic number, because the mean of its divisors is an integer number (42694470).

Almost surely, 2^1345161216 is an apocalyptic number.

1345161216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1345161216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2049334560).

1345161216 is an abundant number, since it is smaller than the sum of its proper divisors (2753507904).

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

1345161216 is an equidigital number, since it uses as much as digits as its factorization.

1345161216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31309 (or 31289 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1345161216 is about 36676.4395218511. The cubic root of 1345161216 is about 1103.8874071270.

Adding to 1345161216 its reverse (6121615431), we get a palindrome (7466776647).

The spelling of 1345161216 in words is "one billion, three hundred forty-five million, one hundred sixty-one thousand, two hundred sixteen".